61288172 has 24 divisors (see below), whose sum is σ = 118613712. Its totient is φ = 27475200.

The previous prime is 61288127. The next prime is 61288211. The reversal of 61288172 is 27188216.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6329 + ... + 12752.

It is an arithmetic number, because the mean of its divisors is an integer number (4942238).

Almost surely, 2^61288172 is an apocalyptic number.

It is an amenable number.

61288172 is a deficient number, since it is larger than the sum of its proper divisors (57325540).

61288172 is a wasteful number, since it uses less digits than its factorization.

61288172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19169 (or 19167 counting only the distinct ones).

The product of its digits is 10752, while the sum is 35.

The square root of 61288172 is about 7828.6762610291. The cubic root of 61288172 is about 394.2686290243.

The spelling of 61288172 in words is "sixty-one million, two hundred eighty-eight thousand, one hundred seventy-two".