77325261 has 16 divisors (see below), whose sum is σ = 111249600. Its totient is φ = 47491200.

The previous prime is 77325233. The next prime is 77325263. The reversal of 77325261 is 16252377.

It is not a de Polignac number, because 77325261 - 2⁵ = 77325229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77325263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21790 + ... + 25088.

It is an arithmetic number, because the mean of its divisors is an integer number (6953100).

Almost surely, 2^77325261 is an apocalyptic number.

It is an amenable number.

77325261 is a deficient number, since it is larger than the sum of its proper divisors (33924339).

77325261 is a wasteful number, since it uses less digits than its factorization.

77325261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3916.

The product of its digits is 17640, while the sum is 33.

The square root of 77325261 is about 8793.4783220293. The cubic root of 77325261 is about 426.0302773340.

The spelling of 77325261 in words is "seventy-seven million, three hundred twenty-five thousand, two hundred sixty-one".