97525221 has 16 divisors (see below), whose sum is σ = 137220480. Its totient is φ = 61487360.

The previous prime is 97525217. The next prime is 97525279. The reversal of 97525221 is 12252579.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 97525221 - 2² = 97525217 is a prime.

It is a super-2 number, since 2×97525221² = 19022337462197682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97525201) 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, 1800 + ... + 14081.

It is an arithmetic number, because the mean of its divisors is an integer number (8576280).

Almost surely, 2^97525221 is an apocalyptic number.

It is an amenable number.

97525221 is a deficient number, since it is larger than the sum of its proper divisors (39695259).

97525221 is a wasteful number, since it uses less digits than its factorization.

97525221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15996.

The product of its digits is 12600, while the sum is 33.

The square root of 97525221 is about 9875.4858614652. The cubic root of 97525221 is about 460.2978867630.

The spelling of 97525221 in words is "ninety-seven million, five hundred twenty-five thousand, two hundred twenty-one".