97505553 has 16 divisors (see below), whose sum is σ = 134228160. Its totient is φ = 62920704.

The previous prime is 97505539. The next prime is 97505563. The reversal of 97505553 is 35550579.

It is a happy number.

It is not a de Polignac number, because 97505553 - 2⁴ = 97505537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97505563) 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, 11233 + ... + 17921.

It is an arithmetic number, because the mean of its divisors is an integer number (8389260).

Almost surely, 2^97505553 is an apocalyptic number.

It is an amenable number.

97505553 is a deficient number, since it is larger than the sum of its proper divisors (36722607).

97505553 is a wasteful number, since it uses less digits than its factorization.

97505553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6848.

The product of its (nonzero) digits is 118125, while the sum is 39.

The square root of 97505553 is about 9874.4900121475. The cubic root of 97505553 is about 460.2669417849.

The spelling of 97505553 in words is "ninety-seven million, five hundred five thousand, five hundred fifty-three".