61525872 has 40 divisors (see below), whose sum is σ = 176603280. Its totient is φ = 20508480.

The previous prime is 61525861. The next prime is 61525879. The reversal of 61525872 is 27852516.

It is a happy number.

61525872 is a `hidden beast` number, since 61 + 525 + 8 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61525879) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70779 + ... + 71642.

It is an arithmetic number, because the mean of its divisors is an integer number (4415082).

Almost surely, 2^61525872 is an apocalyptic number.

It is an amenable number.

61525872 is an abundant number, since it is smaller than the sum of its proper divisors (115077408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61525872 is a wasteful number, since it uses less digits than its factorization.

61525872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142438 (or 142426 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 61525872 is about 7843.8429357044. The cubic root of 61525872 is about 394.7776818714. Note that the first 3 decimals are identical.

The spelling of 61525872 in words is "sixty-one million, five hundred twenty-five thousand, eight hundred seventy-two".