97451615 has 4 divisors (see below), whose sum is σ = 116941944. Its totient is φ = 77961288.

The previous prime is 97451609. The next prime is 97451639. The reversal of 97451615 is 51615479.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51615479 = 751 ⋅68729.

It is a cyclic number.

It is not a de Polignac number, because 97451615 - 2¹⁴ = 97435231 is a prime.

It is a super-2 number, since 2×97451615² = 18993634532216450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9745157 + ... + 9745166.

It is an arithmetic number, because the mean of its divisors is an integer number (29235486).

Almost surely, 2^97451615 is an apocalyptic number.

97451615 is a deficient number, since it is larger than the sum of its proper divisors (19490329).

97451615 is a wasteful number, since it uses less digits than its factorization.

97451615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19490328.

The product of its digits is 37800, while the sum is 38.

The square root of 97451615 is about 9871.7584553108. The cubic root of 97451615 is about 460.1820561667.

The spelling of 97451615 in words is "ninety-seven million, four hundred fifty-one thousand, six hundred fifteen".