252479481 has 8 divisors (see below), whose sum is σ = 348247680. Its totient is φ = 162515472.

The previous prime is 252479477. The next prime is 252479489. The reversal of 252479481 is 184974252.

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

It is not a de Polignac number, because 252479481 - 2² = 252479477 is a prime.

It is a super-2 number, since 2×252479481² = 127491776652058722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (252479489) 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, 1450945 + ... + 1451118.

It is an arithmetic number, because the mean of its divisors is an integer number (43530960).

Almost surely, 2^252479481 is an apocalyptic number.

It is an amenable number.

252479481 is a deficient number, since it is larger than the sum of its proper divisors (95768199).

252479481 is a wasteful number, since it uses less digits than its factorization.

252479481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902095.

The product of its digits is 161280, while the sum is 42.

The square root of 252479481 is about 15889.6029214074. The cubic root of 252479481 is about 632.0363110380.

The spelling of 252479481 in words is "two hundred fifty-two million, four hundred seventy-nine thousand, four hundred eighty-one".