97151591 has 8 divisors (see below), whose sum is σ = 100438800. Its totient is φ = 93908160.

The previous prime is 97151581. The next prime is 97151627. The reversal of 97151591 is 19515179.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97151591 - 2¹⁸ = 96889447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97151521) 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, 6401 + ... + 15338.

It is an arithmetic number, because the mean of its divisors is an integer number (12554850).

Almost surely, 2^97151591 is an apocalyptic number.

97151591 is a deficient number, since it is larger than the sum of its proper divisors (3287209).

97151591 is a wasteful number, since it uses less digits than its factorization.

97151591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21889.

The product of its digits is 14175, while the sum is 38.

The square root of 97151591 is about 9856.5506644059. The cubic root of 97151591 is about 459.7093169805.

The spelling of 97151591 in words is "ninety-seven million, one hundred fifty-one thousand, five hundred ninety-one".