252135502 has 4 divisors (see below), whose sum is σ = 378203256. Its totient is φ = 126067750.

The previous prime is 252135479. The next prime is 252135547. The reversal of 252135502 is 205531252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×252135502² = 127144622737584008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63033874 + ... + 63033877.

It is an arithmetic number, because the mean of its divisors is an integer number (94550814).

Almost surely, 2^252135502 is an apocalyptic number.

252135502 is a deficient number, since it is larger than the sum of its proper divisors (126067754).

252135502 is a wasteful number, since it uses less digits than its factorization.

252135502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126067753.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 252135502 is about 15878.7752046561. The cubic root of 252135502 is about 631.7491510355.

Adding to 252135502 its reverse (205531252), we get a palindrome (457666754).

The spelling of 252135502 in words is "two hundred fifty-two million, one hundred thirty-five thousand, five hundred two".