97952977 has 4 divisors (see below), whose sum is σ = 100342116. Its totient is φ = 95563840.

The previous prime is 97952971. The next prime is 97952993. The reversal of 97952977 is 77925979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77925979 = 71 ⋅1097549.

It can be written as a sum of positive squares in 2 ways, for example, as 1893376 + 96059601 = 1376^2 + 9801^2 .

It is a cyclic number.

It is not a de Polignac number, because 97952977 - 2⁷ = 97952849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97952971) 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, 1194508 + ... + 1194589.

It is an arithmetic number, because the mean of its divisors is an integer number (25085529).

Almost surely, 2^97952977 is an apocalyptic number.

It is an amenable number.

97952977 is a deficient number, since it is larger than the sum of its proper divisors (2389139).

97952977 is a wasteful number, since it uses less digits than its factorization.

97952977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389138.

The product of its digits is 2500470, while the sum is 55.

The square root of 97952977 is about 9897.1196314887. The cubic root of 97952977 is about 460.9698770868.

It can be divided in two parts, 979 and 52977, that added together give a triangular number (53956 = T₃₂₈).

The spelling of 97952977 in words is "ninety-seven million, nine hundred fifty-two thousand, nine hundred seventy-seven".