55503775 has 6 divisors (see below), whose sum is σ = 68824712. Its totient is φ = 44403000.

The previous prime is 55503751. The next prime is 55503787. The reversal of 55503775 is 57730555.

It is not a de Polignac number, because 55503775 - 2⁷ = 55503647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1110051 + ... + 1110100.

Almost surely, 2^55503775 is an apocalyptic number.

55503775 is a deficient number, since it is larger than the sum of its proper divisors (13320937).

55503775 is a wasteful number, since it uses less digits than its factorization.

55503775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220161 (or 2220156 counting only the distinct ones).

The product of its (nonzero) digits is 91875, while the sum is 37.

The square root of 55503775 is about 7450.0855699784. The cubic root of 55503775 is about 381.4528294556.

The spelling of 55503775 in words is "fifty-five million, five hundred three thousand, seven hundred seventy-five".