55920423 has 16 divisors (see below), whose sum is σ = 81012960. Its totient is φ = 34105344.

The previous prime is 55920419. The next prime is 55920427. The reversal of 55920423 is 32402955.

It is an interprime number because it is at equal distance from previous prime (55920419) and next prime (55920427).

It is not a de Polignac number, because 55920423 - 2² = 55920419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55920427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1938 + ... + 10751.

It is an arithmetic number, because the mean of its divisors is an integer number (5063310).

Almost surely, 2^55920423 is an apocalyptic number.

55920423 is a deficient number, since it is larger than the sum of its proper divisors (25092537).

55920423 is a wasteful number, since it uses less digits than its factorization.

55920423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12818.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 55920423 is about 7477.9959213682. The cubic root of 55920423 is about 382.4049300227.

The spelling of 55920423 in words is "fifty-five million, nine hundred twenty thousand, four hundred twenty-three".