97144551 has 24 divisors (see below), whose sum is σ = 161875584. Its totient is φ = 54988560.

The previous prime is 97144547. The next prime is 97144583. The reversal of 97144551 is 15544179.

97144551 is a `hidden beast` number, since 97 + 14 + 4 + 551 = 666.

It is not a de Polignac number, because 97144551 - 2² = 97144547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97144051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 465 + ... + 13946.

It is an arithmetic number, because the mean of its divisors is an integer number (6744816).

Almost surely, 2^97144551 is an apocalyptic number.

97144551 is a deficient number, since it is larger than the sum of its proper divisors (64731033).

97144551 is a wasteful number, since it uses less digits than its factorization.

97144551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14531 (or 14528 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 97144551 is about 9856.1935350317. The cubic root of 97144551 is about 459.6982125758.

The spelling of 97144551 in words is "ninety-seven million, one hundred forty-four thousand, five hundred fifty-one".