97755791 has 4 divisors (see below), whose sum is σ = 111720912. Its totient is φ = 83790672.

The previous prime is 97755787. The next prime is 97755821. The reversal of 97755791 is 19755779.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 97755791 - 2² = 97755787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97755701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6982550 + ... + 6982563.

It is an arithmetic number, because the mean of its divisors is an integer number (27930228).

Almost surely, 2^97755791 is an apocalyptic number.

97755791 is a deficient number, since it is larger than the sum of its proper divisors (13965121).

97755791 is a wasteful number, since it uses less digits than its factorization.

97755791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13965120.

The product of its digits is 694575, while the sum is 50.

The square root of 97755791 is about 9887.1528257633. The cubic root of 97755791 is about 460.6603480621.

The spelling of 97755791 in words is "ninety-seven million, seven hundred fifty-five thousand, seven hundred ninety-one".