61372516 has 24 divisors (see below), whose sum is σ = 115872120. Its totient is φ = 28334592.

The previous prime is 61372513. The next prime is 61372517. The reversal of 61372516 is 61527316.

It can be written as a sum of positive squares in 4 ways, for example, as 32535616 + 28836900 = 5704^2 + 5370^2 .

It is not an unprimeable number, because it can be changed into a prime (61372511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4911 + ... + 12118.

It is an arithmetic number, because the mean of its divisors is an integer number (4828005).

Almost surely, 2^61372516 is an apocalyptic number.

It is an amenable number.

61372516 is a deficient number, since it is larger than the sum of its proper divisors (54499604).

61372516 is a wasteful number, since it uses less digits than its factorization.

61372516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17103 (or 17101 counting only the distinct ones).

The product of its digits is 7560, while the sum is 31.

The square root of 61372516 is about 7834.0612711416. The cubic root of 61372516 is about 394.4494086057.

The spelling of 61372516 in words is "sixty-one million, three hundred seventy-two thousand, five hundred sixteen".