77427545 has 32 divisors (see below), whose sum is σ = 106106112. Its totient is φ = 53805312.

The previous prime is 77427521. The next prime is 77427577. The reversal of 77427545 is 54572477.

It is a cyclic number.

It is not a de Polignac number, because 77427545 - 2⁸ = 77427289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99779 + ... + 100551.

It is an arithmetic number, because the mean of its divisors is an integer number (3315816).

Almost surely, 2^77427545 is an apocalyptic number.

It is an amenable number.

77427545 is a deficient number, since it is larger than the sum of its proper divisors (28678567).

77427545 is a wasteful number, since it uses less digits than its factorization.

77427545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881.

The product of its digits is 274400, while the sum is 41.

The square root of 77427545 is about 8799.2923010888. The cubic root of 77427545 is about 426.2180421112.

The spelling of 77427545 in words is "seventy-seven million, four hundred twenty-seven thousand, five hundred forty-five".