97087147 has 4 divisors (see below), whose sum is σ = 97465176. Its totient is φ = 96709120.

The previous prime is 97087141. The next prime is 97087171. The reversal of 97087147 is 74178079.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74178079 = 47 ⋅1578257.

It is a cyclic number.

It is not a de Polignac number, because 97087147 - 2¹⁵ = 97054379 is a prime.

It is a super-2 number, since 2×97087147² = 18851828225199218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97087141) 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, 188629 + ... + 189142.

It is an arithmetic number, because the mean of its divisors is an integer number (24366294).

Almost surely, 2^97087147 is an apocalyptic number.

97087147 is a deficient number, since it is larger than the sum of its proper divisors (378029).

97087147 is a wasteful number, since it uses less digits than its factorization.

97087147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378028.

The product of its (nonzero) digits is 98784, while the sum is 43.

The square root of 97087147 is about 9853.2810271503. The cubic root of 97087147 is about 459.6076474835.

The spelling of 97087147 in words is "ninety-seven million, eighty-seven thousand, one hundred forty-seven".