61172895 has 32 divisors (see below), whose sum is σ = 112154112. Its totient is φ = 27891072.

The previous prime is 61172887. The next prime is 61172899. The reversal of 61172895 is 59827116.

It is not a de Polignac number, because 61172895 - 2³ = 61172887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61172899) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71289 + ... + 72141.

It is an arithmetic number, because the mean of its divisors is an integer number (3504816).

Almost surely, 2^61172895 is an apocalyptic number.

61172895 is a deficient number, since it is larger than the sum of its proper divisors (50981217).

61172895 is a wasteful number, since it uses less digits than its factorization.

61172895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551.

The product of its digits is 30240, while the sum is 39.

The square root of 61172895 is about 7821.3103122175. The cubic root of 61172895 is about 394.0212804262.

The spelling of 61172895 in words is "sixty-one million, one hundred seventy-two thousand, eight hundred ninety-five".