61419520 has 52 divisors (see below), whose sum is σ = 147438000. Its totient is φ = 24559616.

The previous prime is 61419509. The next prime is 61419557. The reversal of 61419520 is 2591416.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18981 + ... + 21979.

Almost surely, 2^61419520 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 61419520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73719000).

61419520 is an abundant number, since it is smaller than the sum of its proper divisors (86018480).

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

61419520 is an equidigital number, since it uses as much as digits as its factorization.

61419520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3028 (or 3006 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 61419520 is about 7837.0606734923. The cubic root of 61419520 is about 394.5500832502.

The spelling of 61419520 in words is "sixty-one million, four hundred nineteen thousand, five hundred twenty".