97961505 has 16 divisors (see below), whose sum is σ = 160562304. Its totient is φ = 50971520.

The previous prime is 97961491. The next prime is 97961537. The reversal of 97961505 is 50516979.

It is not a de Polignac number, because 97961505 - 2⁶ = 97961441 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79029 + ... + 80258.

It is an arithmetic number, because the mean of its divisors is an integer number (10035144).

Almost surely, 2^97961505 is an apocalyptic number.

It is an amenable number.

97961505 is a deficient number, since it is larger than the sum of its proper divisors (62600799).

97961505 is a wasteful number, since it uses less digits than its factorization.

97961505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159336.

The product of its (nonzero) digits is 85050, while the sum is 42.

The square root of 97961505 is about 9897.5504545317. The cubic root of 97961505 is about 460.9832543799.

The spelling of 97961505 in words is "ninety-seven million, nine hundred sixty-one thousand, five hundred five".