55653240 has 64 divisors (see below), whose sum is σ = 176787360. Its totient is φ = 13967360.

The previous prime is 55653239. The next prime is 55653259. The reversal of 55653240 is 4235655.

55653240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 55653198 and 55653207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11601 + ... + 15680.

Almost surely, 2^55653240 is an apocalyptic number.

It is an amenable number.

55653240 is an abundant number, since it is smaller than the sum of its proper divisors (121134120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55653240 is a wasteful number, since it uses less digits than its factorization.

55653240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27312 (or 27308 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 55653240 is about 7460.1099187613. The cubic root of 55653240 is about 381.7949247842.

Adding to 55653240 its reverse (4235655), we get a palindrome (59888895).

The spelling of 55653240 in words is "fifty-five million, six hundred fifty-three thousand, two hundred forty".