56697261 has 8 divisors (see below), whose sum is σ = 80043264. Its totient is φ = 35574720.

The previous prime is 56697247. The next prime is 56697271. The reversal of 56697261 is 16279665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56697261 - 2⁹ = 56696749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56697211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555805 + ... + 555906.

It is an arithmetic number, because the mean of its divisors is an integer number (10005408).

Almost surely, 2^56697261 is an apocalyptic number.

56697261 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

56697261 is a deficient number, since it is larger than the sum of its proper divisors (23346003).

56697261 is a wasteful number, since it uses less digits than its factorization.

56697261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111731.

The product of its digits is 136080, while the sum is 42.

The square root of 56697261 is about 7529.7583626568. The cubic root of 56697261 is about 384.1675633184.

The spelling of 56697261 in words is "fifty-six million, six hundred ninety-seven thousand, two hundred sixty-one".