97772545 has 32 divisors (see below), whose sum is σ = 130473504. Its totient is φ = 69888000.

The previous prime is 97772527. The next prime is 97772551. The reversal of 97772545 is 54527779.

It is a Cunningham number, because it is equal to 9888²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 2534464 + 95238081 = 1592^2 + 9759^2 .

It is not a de Polignac number, because 97772545 - 2⁵ = 97772513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 97772495 and 97772504.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347805 + ... + 348085.

It is an arithmetic number, because the mean of its divisors is an integer number (4077297).

Almost surely, 2^97772545 is an apocalyptic number.

It is an amenable number.

97772545 is a deficient number, since it is larger than the sum of its proper divisors (32700959).

97772545 is a wasteful number, since it uses less digits than its factorization.

97772545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453.

The product of its digits is 617400, while the sum is 46.

The square root of 97772545 is about 9888.0000505663. Note that the first 4 decimals coincide. The cubic root of 97772545 is about 460.6866635112.

The spelling of 97772545 in words is "ninety-seven million, seven hundred seventy-two thousand, five hundred forty-five".