2256304557 has 16 divisors (see below), whose sum is σ = 3315169088. Its totient is φ = 1356203520.

The previous prime is 2256304553. The next prime is 2256304571. The reversal of 2256304557 is 7554036522.

It is a happy number.

It is not a de Polignac number, because 2256304557 - 2² = 2256304553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256304553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 671044 + ... + 674397.

It is an arithmetic number, because the mean of its divisors is an integer number (207198068).

Almost surely, 2^2256304557 is an apocalyptic number.

It is an amenable number.

2256304557 is a deficient number, since it is larger than the sum of its proper divisors (1058864531).

2256304557 is a wasteful number, since it uses less digits than its factorization.

2256304557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345500.

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

The square root of 2256304557 is about 47500.5742807390. The cubic root of 2256304557 is about 1311.5934530467.

The spelling of 2256304557 in words is "two billion, two hundred fifty-six million, three hundred four thousand, five hundred fifty-seven".