61163172 has 54 divisors (see below), whose sum is σ = 179854038. Its totient is φ = 17474688.

The previous prime is 61163153. The next prime is 61163213. The reversal of 61163172 is 27136116.

It can be written as a sum of positive squares in only one way, i.e., 38638656 + 22524516 = 6216^2 + 4746^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15573 + ... + 19100.

Almost surely, 2^61163172 is an apocalyptic number.

It is an amenable number.

61163172 is an abundant number, since it is smaller than the sum of its proper divisors (118690866).

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

61163172 is a wasteful number, since it uses less digits than its factorization.

61163172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34697 (or 34685 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 61163172 is about 7820.6887164750. The cubic root of 61163172 is about 394.0004036860. Note that the first 3 decimals are identical.

Adding to 61163172 its reverse (27136116), we get a palindrome (88299288).

The spelling of 61163172 in words is "sixty-one million, one hundred sixty-three thousand, one hundred seventy-two".