56745261 has 6 divisors (see below), whose sum is σ = 81965390. Its totient is φ = 37830168.

The previous prime is 56745239. The next prime is 56745287. The reversal of 56745261 is 16254765.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 56160036 + 585225 = 7494^2 + 765^2 .

It is not a de Polignac number, because 56745261 - 2¹¹ = 56743213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56745461) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3152506 + ... + 3152523.

Almost surely, 2^56745261 is an apocalyptic number.

It is an amenable number.

56745261 is a deficient number, since it is larger than the sum of its proper divisors (25220129).

56745261 is a wasteful number, since it uses less digits than its factorization.

56745261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6305035 (or 6305032 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 56745261 is about 7532.9450416155. The cubic root of 56745261 is about 384.2759450484.

The spelling of 56745261 in words is "fifty-six million, seven hundred forty-five thousand, two hundred sixty-one".