61172496 has 200 divisors, whose sum is σ = 221098944. Its totient is φ = 15863040.

The previous prime is 61172491. The next prime is 61172497. The reversal of 61172496 is 69427116.

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a self number, because there is not a number n which added to its sum of digits gives 61172496.

It is not an unprimeable number, because it can be changed into a prime (61172491) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 99486 + ... + 100098.

Almost surely, 2^61172496 is an apocalyptic number.

61172496 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61172496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110549472).

61172496 is an abundant number, since it is smaller than the sum of its proper divisors (159926448).

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

61172496 is a wasteful number, since it uses less digits than its factorization.

61172496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 636 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 61172496 is about 7821.2848049409. The cubic root of 61172496 is about 394.0204237568.

The spelling of 61172496 in words is "sixty-one million, one hundred seventy-two thousand, four hundred ninety-six".