74777055 has 16 divisors (see below), whose sum is σ = 121159680. Its totient is φ = 39375648.

The previous prime is 74777041. The next prime is 74777069. The reversal of 74777055 is 55077747.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (74777041) and next prime (74777069).

It is not a de Polignac number, because 74777055 - 2⁷ = 74776927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74776998 and 74777016.

It is a congruent number.

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, 30367 + ... + 32736.

It is an arithmetic number, because the mean of its divisors is an integer number (7572480).

Almost surely, 2^74777055 is an apocalyptic number.

74777055 is a deficient number, since it is larger than the sum of its proper divisors (46382625).

74777055 is a wasteful number, since it uses less digits than its factorization.

74777055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63190.

The product of its (nonzero) digits is 240100, while the sum is 42.

The square root of 74777055 is about 8647.3727223938. The cubic root of 74777055 is about 421.2980532608.

The spelling of 74777055 in words is "seventy-four million, seven hundred seventy-seven thousand, fifty-five".