97136537 has 4 divisors (see below), whose sum is σ = 97161936. Its totient is φ = 97111140.

The previous prime is 97136513. The next prime is 97136551. The reversal of 97136537 is 73563179.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73563179 = 809 ⋅90931.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97136537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97136494 and 97136503.

It is not an unprimeable number, because it can be changed into a prime (97136587) 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, 5663 + ... + 15044.

It is an arithmetic number, because the mean of its divisors is an integer number (24290484).

Almost surely, 2^97136537 is an apocalyptic number.

It is an amenable number.

97136537 is a deficient number, since it is larger than the sum of its proper divisors (25399).

97136537 is a wasteful number, since it uses less digits than its factorization.

97136537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25398.

The product of its digits is 119070, while the sum is 41.

The square root of 97136537 is about 9855.7869802467. The cubic root of 97136537 is about 459.6855711984.

The spelling of 97136537 in words is "ninety-seven million, one hundred thirty-six thousand, five hundred thirty-seven".