55657603 has 4 divisors (see below), whose sum is σ = 55890720. Its totient is φ = 55424488.

The previous prime is 55657601. The next prime is 55657621. The reversal of 55657603 is 30675655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30675655 = 5 ⋅6135131.

It is a cyclic number.

It is not a de Polignac number, because 55657603 - 2¹ = 55657601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55657601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116200 + ... + 116677.

It is an arithmetic number, because the mean of its divisors is an integer number (13972680).

Almost surely, 2^55657603 is an apocalyptic number.

55657603 is a deficient number, since it is larger than the sum of its proper divisors (233117).

55657603 is a wasteful number, since it uses less digits than its factorization.

55657603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233116.

The product of its (nonzero) digits is 94500, while the sum is 37.

The square root of 55657603 is about 7460.4023349951. The cubic root of 55657603 is about 381.8049016081.

The spelling of 55657603 in words is "fifty-five million, six hundred fifty-seven thousand, six hundred three".