55775754 has 48 divisors (see below), whose sum is σ = 129055680. Its totient is φ = 17357760.

The previous prime is 55775747. The next prime is 55775767. The reversal of 55775754 is 45757755.

It is a happy number.

55775754 is a `hidden beast` number, since 5 + 5 + 77 + 575 + 4 = 666.

It is a super-2 number, since 2×55775754² = 6221869468537032, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23134 + ... + 25430.

It is an arithmetic number, because the mean of its divisors is an integer number (2688660).

Almost surely, 2^55775754 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55775754, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64527840).

55775754 is an abundant number, since it is smaller than the sum of its proper divisors (73279926).

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

55775754 is a wasteful number, since it uses less digits than its factorization.

55775754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395 (or 2392 counting only the distinct ones).

The product of its digits is 857500, while the sum is 45.

The square root of 55775754 is about 7468.3166778063. The cubic root of 55775754 is about 382.0748781883.

The spelling of 55775754 in words is "fifty-five million, seven hundred seventy-five thousand, seven hundred fifty-four".