64126531 has 8 divisors (see below), whose sum is σ = 73672704. Its totient is φ = 54676680.

The previous prime is 64126523. The next prime is 64126537. The reversal of 64126531 is 13562146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64126531 - 2³ = 64126523 is a prime.

It is a super-2 number, since 2×64126531² = 8224423956187922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64126531.

It is not an unprimeable number, because it can be changed into a prime (64126537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22645 + ... + 25318.

It is an arithmetic number, because the mean of its divisors is an integer number (9209088).

Almost surely, 2^64126531 is an apocalyptic number.

64126531 is a deficient number, since it is larger than the sum of its proper divisors (9546173).

64126531 is a wasteful number, since it uses less digits than its factorization.

64126531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48161.

The product of its digits is 4320, while the sum is 28.

The square root of 64126531 is about 8007.9042826447. The cubic root of 64126531 is about 400.2634327199.

Adding to 64126531 its reverse (13562146), we get a palindrome (77688677).

It can be divided in two parts, 641 and 26531, that added together give a palindrome (27172).

The spelling of 64126531 in words is "sixty-four million, one hundred twenty-six thousand, five hundred thirty-one".