61525172 has 12 divisors (see below), whose sum is σ = 108144960. Its totient is φ = 30626616.

The previous prime is 61525157. The next prime is 61525181. The reversal of 61525172 is 27152516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32972 + ... + 34787.

It is an arithmetic number, because the mean of its divisors is an integer number (9012080).

Almost surely, 2^61525172 is an apocalyptic number.

It is an amenable number.

61525172 is a deficient number, since it is larger than the sum of its proper divisors (46619788).

61525172 is a wasteful number, since it uses less digits than its factorization.

61525172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67990 (or 67988 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 61525172 is about 7843.7983145922. The cubic root of 61525172 is about 394.7761846940.

Adding to 61525172 its reverse (27152516), we get a palindrome (88677688).

It can be divided in two parts, 61525 and 172, that multiplied together give a triangular number (10582300 = T₄₆₀₀).

The spelling of 61525172 in words is "sixty-one million, five hundred twenty-five thousand, one hundred seventy-two".