97842555 has 24 divisors (see below), whose sum is σ = 169949520. Its totient is φ = 52073280.

The previous prime is 97842551. The next prime is 97842559. The reversal of 97842555 is 55524879.

97842555 is a `hidden beast` number, since 97 + 8 + 4 + 2 + 555 = 666.

It is an interprime number because it is at equal distance from previous prime (97842551) and next prime (97842559).

It is not a de Polignac number, because 97842555 - 2² = 97842551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 97842555.

It is not an unprimeable number, because it can be changed into a prime (97842551) 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, 22336 + ... + 26354.

It is an arithmetic number, because the mean of its divisors is an integer number (7081230).

Almost surely, 2^97842555 is an apocalyptic number.

97842555 is a deficient number, since it is larger than the sum of its proper divisors (72106965).

97842555 is a wasteful number, since it uses less digits than its factorization.

97842555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571 (or 4568 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 97842555 is about 9891.5395667206. The cubic root of 97842555 is about 460.7965954564.

The spelling of 97842555 in words is "ninety-seven million, eight hundred forty-two thousand, five hundred fifty-five".