55772563 has 32 divisors (see below), whose sum is σ = 74400768. Its totient is φ = 40473600.

The previous prime is 55772557. The next prime is 55772611. The reversal of 55772563 is 36527755.

It is a de Polignac number, because none of the positive numbers 2^k-55772563 is a prime.

It is a super-2 number, since 2×55772563² = 6221157567177938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55772533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179178 + ... + 179488.

It is an arithmetic number, because the mean of its divisors is an integer number (2325024).

Almost surely, 2^55772563 is an apocalyptic number.

55772563 is a deficient number, since it is larger than the sum of its proper divisors (18628205).

55772563 is a wasteful number, since it uses less digits than its factorization.

55772563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483.

The product of its digits is 220500, while the sum is 40.

The square root of 55772563 is about 7468.1030389249. The cubic root of 55772563 is about 382.0675917236.

The spelling of 55772563 in words is "fifty-five million, seven hundred seventy-two thousand, five hundred sixty-three".