53926221 has 4 divisors (see below), whose sum is σ = 71901632. Its totient is φ = 35950812.

The previous prime is 53926217. The next prime is 53926231. The reversal of 53926221 is 12262935.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 53926221 - 2² = 53926217 is a prime.

It is a super-2 number, since 2×53926221² = 5816074622681682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53926211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8987701 + ... + 8987706.

It is an arithmetic number, because the mean of its divisors is an integer number (17975408).

Almost surely, 2^53926221 is an apocalyptic number.

It is an amenable number.

53926221 is a deficient number, since it is larger than the sum of its proper divisors (17975411).

53926221 is a wasteful number, since it uses less digits than its factorization.

53926221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17975410.

The product of its digits is 6480, while the sum is 30.

The square root of 53926221 is about 7343.4474873863. The cubic root of 53926221 is about 377.8040962986.

The spelling of 53926221 in words is "fifty-three million, nine hundred twenty-six thousand, two hundred twenty-one".