97573945 has 12 divisors (see below), whose sum is σ = 136205604. Its totient is φ = 66907680.

The previous prime is 97573943. The next prime is 97573963. The reversal of 97573945 is 54937579.

It can be written as a sum of positive squares in 2 ways, for example, as 76807696 + 20766249 = 8764^2 + 4557^2 .

It is not a de Polignac number, because 97573945 - 2¹ = 97573943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97573943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198886 + ... + 199375.

It is an arithmetic number, because the mean of its divisors is an integer number (11350467).

Almost surely, 2^97573945 is an apocalyptic number.

It is an amenable number.

97573945 is a deficient number, since it is larger than the sum of its proper divisors (38631659).

97573945 is a wasteful number, since it uses less digits than its factorization.

97573945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398280 (or 398273 counting only the distinct ones).

The product of its digits is 1190700, while the sum is 49.

The square root of 97573945 is about 9877.9524700213. The cubic root of 97573945 is about 460.3745295708.

The spelling of 97573945 in words is "ninety-seven million, five hundred seventy-three thousand, nine hundred forty-five".