97099520 has 72 divisors (see below), whose sum is σ = 265834464. Its totient is φ = 33288192.

The previous prime is 97099517. The next prime is 97099523. The reversal of 97099520 is 2599079.

It is an interprime number because it is at equal distance from previous prime (97099517) and next prime (97099523).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97099523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3542 + ... + 14378.

Almost surely, 2^97099520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97099520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132917232).

97099520 is an abundant number, since it is smaller than the sum of its proper divisors (168734944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97099520 is a wasteful number, since it uses less digits than its factorization.

97099520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10865 (or 10851 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 41.

The square root of 97099520 is about 9853.9088690732. The cubic root of 97099520 is about 459.6271711247.

The spelling of 97099520 in words is "ninety-seven million, ninety-nine thousand, five hundred twenty".