55770822 has 16 divisors (see below), whose sum is σ = 123935280. Its totient is φ = 18590256.

The previous prime is 55770821. The next prime is 55770853. The reversal of 55770822 is 22807755.

55770822 is a `hidden beast` number, since 5 + 577 + 0 + 82 + 2 = 666.

It is a super-2 number, since 2×55770822² = 6220769173111368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55770821) 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, 516343 + ... + 516450.

It is an arithmetic number, because the mean of its divisors is an integer number (7745955).

Almost surely, 2^55770822 is an apocalyptic number.

55770822 is an abundant number, since it is smaller than the sum of its proper divisors (68164458).

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

55770822 is a wasteful number, since it uses less digits than its factorization.

55770822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032804 (or 1032798 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 55770822 is about 7467.9864756171. The cubic root of 55770822 is about 382.0636161332.

The spelling of 55770822 in words is "fifty-five million, seven hundred seventy thousand, eight hundred twenty-two".