97779525 has 24 divisors (see below), whose sum is σ = 162010464. Its totient is φ = 52036800.

The previous prime is 97779511. The next prime is 97779553. The reversal of 97779525 is 52597779.

It is not a de Polignac number, because 97779525 - 2¹⁶ = 97713989 is a prime.

It is a congruent number.

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, 42915 + ... + 45135.

It is an arithmetic number, because the mean of its divisors is an integer number (6750436).

Almost surely, 2^97779525 is an apocalyptic number.

It is an amenable number.

97779525 is a deficient number, since it is larger than the sum of its proper divisors (64230939).

97779525 is a wasteful number, since it uses less digits than its factorization.

97779525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821 (or 2816 counting only the distinct ones).

The product of its digits is 1389150, while the sum is 51.

The square root of 97779525 is about 9888.3529973399. The cubic root of 97779525 is about 460.6976260855.

The spelling of 97779525 in words is "ninety-seven million, seven hundred seventy-nine thousand, five hundred twenty-five".