256070553 has 4 divisors (see below), whose sum is σ = 341427408. Its totient is φ = 170713700.

The previous prime is 256070519. The next prime is 256070557. The reversal of 256070553 is 355070652.

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 a cyclic number.

It is not a de Polignac number, because 256070553 - 2⁹ = 256070041 is a prime.

It is a super-2 number, since 2×256070553² = 131144256227451618, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (256070557) 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, 42678423 + ... + 42678428.

It is an arithmetic number, because the mean of its divisors is an integer number (85356852).

Almost surely, 2^256070553 is an apocalyptic number.

It is an amenable number.

256070553 is a deficient number, since it is larger than the sum of its proper divisors (85356855).

256070553 is an equidigital number, since it uses as much as digits as its factorization.

256070553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85356854.

The product of its (nonzero) digits is 31500, while the sum is 33.

The square root of 256070553 is about 16002.2046293628. The cubic root of 256070553 is about 635.0187466307.

Subtracting 256070553 from its reverse (355070652), we obtain a palindrome (99000099).

The spelling of 256070553 in words is "two hundred fifty-six million, seventy thousand, five hundred fifty-three".