55877823 has 8 divisors (see below), whose sum is σ = 82782000. Its totient is φ = 37251864.

The previous prime is 55877821. The next prime is 55877837. The reversal of 55877823 is 32877855.

55877823 is a `hidden beast` number, since 558 + 7 + 78 + 23 = 666.

It is not a de Polignac number, because 55877823 - 2¹ = 55877821 is a prime.

It is a super-2 number, since 2×55877823² = 6244662206438658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55877821) 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, 1034748 + ... + 1034801.

It is an arithmetic number, because the mean of its divisors is an integer number (10347750).

Almost surely, 2^55877823 is an apocalyptic number.

55877823 is a deficient number, since it is larger than the sum of its proper divisors (26904177).

55877823 is a wasteful number, since it uses less digits than its factorization.

55877823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2069558 (or 2069552 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 55877823 is about 7475.1470219655. The cubic root of 55877823 is about 382.3078004019.

The spelling of 55877823 in words is "fifty-five million, eight hundred seventy-seven thousand, eight hundred twenty-three".