55023787 has 16 divisors (see below), whose sum is σ = 68366592. Its totient is φ = 43120800.

The previous prime is 55023767. The next prime is 55023809. The reversal of 55023787 is 78732055.

It is a cyclic number.

It is not a de Polignac number, because 55023787 - 2²³ = 46635179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55023707) 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, 6912 + ... + 12562.

It is an arithmetic number, because the mean of its divisors is an integer number (4272912).

Almost surely, 2^55023787 is an apocalyptic number.

55023787 is a deficient number, since it is larger than the sum of its proper divisors (13342805).

55023787 is a wasteful number, since it uses less digits than its factorization.

55023787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 55023787 is about 7417.8020329475. The cubic root of 55023787 is about 380.3500629199.

The spelling of 55023787 in words is "fifty-five million, twenty-three thousand, seven hundred eighty-seven".