256240552 has 8 divisors (see below), whose sum is σ = 480451050. Its totient is φ = 128120272.

The previous prime is 256240547. The next prime is 256240561. The reversal of 256240552 is 255042652.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 244171876 + 12068676 = 15626^2 + 3474^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16015027 + ... + 16015042.

Almost surely, 2^256240552 is an apocalyptic number.

It is an amenable number.

256240552 is a deficient number, since it is larger than the sum of its proper divisors (224210498).

256240552 is a wasteful number, since it uses less digits than its factorization.

256240552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32030075 (or 32030071 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 256240552 is about 16007.5154849214. The cubic root of 256240552 is about 635.1592400357.

The spelling of 256240552 in words is "two hundred fifty-six million, two hundred forty thousand, five hundred fifty-two".