97655651 has 2 divisors, whose sum is σ = 97655652. Its totient is φ = 97655650.

The previous prime is 97655629. The next prime is 97655669. The reversal of 97655651 is 15655679.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97655651 - 2¹⁸ = 97393507 is a prime.

It is not a weakly prime, because it can be changed into another prime (97655681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48827825 + 48827826.

It is an arithmetic number, because the mean of its divisors is an integer number (48827826).

Almost surely, 2^97655651 is an apocalyptic number.

97655651 is a deficient number, since it is larger than the sum of its proper divisors (1).

97655651 is an equidigital number, since it uses as much as digits as its factorization.

97655651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 283500, while the sum is 44.

The square root of 97655651 is about 9882.0873807106. The cubic root of 97655651 is about 460.5029957879.

The spelling of 97655651 in words is "ninety-seven million, six hundred fifty-five thousand, six hundred fifty-one".