97557534 has 40 divisors (see below), whose sum is σ = 220317768. Its totient is φ = 32263920.

The previous prime is 97557517. The next prime is 97557541. The reversal of 97557534 is 43575579.

97557534 is a `hidden beast` number, since 9 + 75 + 575 + 3 + 4 = 666.

It is a super-2 number, since 2×97557534² = 19034944880322312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 97557534.

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 18924 + ... + 23520.

Almost surely, 2^97557534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97557534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110158884).

97557534 is an abundant number, since it is smaller than the sum of its proper divisors (122760234).

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

97557534 is a wasteful number, since it uses less digits than its factorization.

97557534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742 (or 4733 counting only the distinct ones).

The product of its digits is 661500, while the sum is 45.

The square root of 97557534 is about 9877.1217467438. The cubic root of 97557534 is about 460.3487179329.

The spelling of 97557534 in words is "ninety-seven million, five hundred fifty-seven thousand, five hundred thirty-four".