61125320 has 32 divisors (see below), whose sum is σ = 139475520. Its totient is φ = 24104640.

The previous prime is 61125307. The next prime is 61125331. The reversal of 61125320 is 2352116.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 61125292 and 61125301.

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, 7922 + ... + 13601.

It is an arithmetic number, because the mean of its divisors is an integer number (4358610).

Almost surely, 2^61125320 is an apocalyptic number.

It is an amenable number.

61125320 is an abundant number, since it is smaller than the sum of its proper divisors (78350200).

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

61125320 is a wasteful number, since it uses less digits than its factorization.

61125320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21605 (or 21601 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 61125320 is about 7818.2683504725. The cubic root of 61125320 is about 393.9191086823.

Adding to 61125320 its reverse (2352116), we get a palindrome (63477436).

The spelling of 61125320 in words is "sixty-one million, one hundred twenty-five thousand, three hundred twenty".