257354652 has 12 divisors (see below), whose sum is σ = 600494216. Its totient is φ = 85784880.

The previous prime is 257354651. The next prime is 257354681. The reversal of 257354652 is 256453752.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×257354652² = 132462833812082208, 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 257354652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257354651) 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, 10723099 + ... + 10723122.

Almost surely, 2^257354652 is an apocalyptic number.

It is an amenable number.

257354652 is an abundant number, since it is smaller than the sum of its proper divisors (343139564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257354652 is a wasteful number, since it uses less digits than its factorization.

257354652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21446228 (or 21446226 counting only the distinct ones).

The product of its digits is 252000, while the sum is 39.

The square root of 257354652 is about 16042.2770204233. The cubic root of 257354652 is about 636.0784385675.

The spelling of 257354652 in words is "two hundred fifty-seven million, three hundred fifty-four thousand, six hundred fifty-two".