56709822 has 16 divisors (see below), whose sum is σ = 122144400. Its totient is φ = 17449152.

The previous prime is 56709817. The next prime is 56709827. The reversal of 56709822 is 22890765.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56709817) and next prime (56709827).

It is a super-2 number, since 2×56709822² = 6432007822543368, which contains 22 as substring.

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

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56709827) 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, 363447 + ... + 363602.

It is an arithmetic number, because the mean of its divisors is an integer number (7634025).

Almost surely, 2^56709822 is an apocalyptic number.

56709822 is an abundant number, since it is smaller than the sum of its proper divisors (65434578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56709822 is a wasteful number, since it uses less digits than its factorization.

56709822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727067.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 56709822 is about 7530.5924069757. The cubic root of 56709822 is about 384.1959313699.

The spelling of 56709822 in words is "fifty-six million, seven hundred nine thousand, eight hundred twenty-two".