55775053440 has 128 divisors (see below), whose sum is σ = 197536708800. Its totient is φ = 14873342976.

The previous prime is 55775053427. The next prime is 55775053457. The reversal of 55775053440 is 4435057755.

It is a happy number.

55775053440 is a `hidden beast` number, since 5 + 5 + 7 + 75 + 0 + 534 + 40 = 666.

55775053440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×55775053440² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1596582 + ... + 1631141.

Almost surely, 2^55775053440 is an apocalyptic number.

It is an amenable number.

55775053440 is an abundant number, since it is smaller than the sum of its proper divisors (141761655360).

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

55775053440 is a wasteful number, since it uses less digits than its factorization.

55775053440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3227751 (or 3227733 counting only the distinct ones).

The product of its (nonzero) digits is 1470000, while the sum is 45.

The spelling of 55775053440 in words is "fifty-five billion, seven hundred seventy-five million, fifty-three thousand, four hundred forty".