97955815 has 16 divisors (see below), whose sum is σ = 121671936. Its totient is φ = 75628800.

The previous prime is 97955797. The next prime is 97955821. The reversal of 97955815 is 51855979.

It is not a de Polignac number, because 97955815 - 2⁵ = 97955783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80149 + ... + 81361.

It is an arithmetic number, because the mean of its divisors is an integer number (7604496).

Almost surely, 2^97955815 is an apocalyptic number.

97955815 is a deficient number, since it is larger than the sum of its proper divisors (23716121).

97955815 is a wasteful number, since it uses less digits than its factorization.

97955815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770.

The product of its digits is 567000, while the sum is 49.

The square root of 97955815 is about 9897.2630054980. The cubic root of 97955815 is about 460.9743289504.

The spelling of 97955815 in words is "ninety-seven million, nine hundred fifty-five thousand, eight hundred fifteen".