55653615 has 16 divisors (see below), whose sum is σ = 98940000. Its totient is φ = 29681856.

The previous prime is 55653613. The next prime is 55653623. The reversal of 55653615 is 51635655.

It is not a de Polignac number, because 55653615 - 2¹ = 55653613 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 55653615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55653613) 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, 205990 + ... + 206259.

It is an arithmetic number, because the mean of its divisors is an integer number (6183750).

Almost surely, 2^55653615 is an apocalyptic number.

55653615 is a deficient number, since it is larger than the sum of its proper divisors (43286385).

55653615 is a wasteful number, since it uses less digits than its factorization.

55653615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412263 (or 412257 counting only the distinct ones).

The product of its digits is 67500, while the sum is 36.

The square root of 55653615 is about 7460.1350523968. The cubic root of 55653615 is about 381.7957823130.

It can be divided in two parts, 5565 and 3615, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 55653615 in words is "fifty-five million, six hundred fifty-three thousand, six hundred fifteen".