61572465 has 24 divisors (see below), whose sum is σ = 107713320. Its totient is φ = 32534784.

The previous prime is 61572443. The next prime is 61572503. The reversal of 61572465 is 56427516.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31002624 + 30569841 = 5568^2 + 5529^2 .

It is not a de Polignac number, because 61572465 - 2⁷ = 61572337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1372 + ... + 11181.

It is an arithmetic number, because the mean of its divisors is an integer number (4488055).

Almost surely, 2^61572465 is an apocalyptic number.

It is an amenable number.

61572465 is a deficient number, since it is larger than the sum of its proper divisors (46140855).

61572465 is a wasteful number, since it uses less digits than its factorization.

61572465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12673 (or 12670 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 61572465 is about 7846.8124101446. The cubic root of 61572465 is about 394.8773106114.

The spelling of 61572465 in words is "sixty-one million, five hundred seventy-two thousand, four hundred sixty-five".