61251372 has 108 divisors (see below), whose sum is σ = 194035296. Its totient is φ = 16148160.

The previous prime is 61251353. The next prime is 61251373. The reversal of 61251372 is 27315216.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61251373) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21597 + ... + 24267.

Almost surely, 2^61251372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61251372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97017648).

61251372 is an abundant number, since it is smaller than the sum of its proper divisors (132783924).

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

61251372 is a wasteful number, since it uses less digits than its factorization.

61251372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708 (or 2696 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 61251372 is about 7826.3255746231. The cubic root of 61251372 is about 394.1897013944.

Adding to 61251372 its reverse (27315216), we get a palindrome (88566588).

It can be divided in two parts, 612 and 51372, that added together give a square (51984 = 228²).

The spelling of 61251372 in words is "sixty-one million, two hundred fifty-one thousand, three hundred seventy-two".