61172004 has 24 divisors (see below), whose sum is σ = 145772928. Its totient is φ = 19956640.

The previous prime is 61171993. The next prime is 61172071. The reversal of 61172004 is 40027116.

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, 53667 + ... + 54794.

It is an arithmetic number, because the mean of its divisors is an integer number (6073872).

Almost surely, 2^61172004 is an apocalyptic number.

It is an amenable number.

61172004 is an abundant number, since it is smaller than the sum of its proper divisors (84600924).

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

61172004 is a wasteful number, since it uses less digits than its factorization.

61172004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108515 (or 108513 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 61172004 is about 7821.2533522448. The cubic root of 61172004 is about 394.0193674075.

The spelling of 61172004 in words is "sixty-one million, one hundred seventy-two thousand, four".