77525361 has 6 divisors (see below), whose sum is σ = 111981090. Its totient is φ = 51683568.

The previous prime is 77525359. The next prime is 77525401. The reversal of 77525361 is 16352577.

77525361 is a `hidden beast` number, since 77 + 52 + 536 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 61074225 + 16451136 = 7815^2 + 4056^2 .

It is not a de Polignac number, because 77525361 - 2¹ = 77525359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77525561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4306956 + ... + 4306973.

It is an arithmetic number, because the mean of its divisors is an integer number (18663515).

Almost surely, 2^77525361 is an apocalyptic number.

It is an amenable number.

77525361 is a deficient number, since it is larger than the sum of its proper divisors (34455729).

77525361 is a wasteful number, since it uses less digits than its factorization.

77525361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8613935 (or 8613932 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 77525361 is about 8804.8487210173. The cubic root of 77525361 is about 426.3974502703.

The spelling of 77525361 in words is "seventy-seven million, five hundred twenty-five thousand, three hundred sixty-one".