61481592 has 80 divisors (see below), whose sum is σ = 174530400. Its totient is φ = 20217600.

The previous prime is 61481579. The next prime is 61481603. The reversal of 61481592 is 29518416.

61481592 is a `hidden beast` number, since 61 + 4 + 8 + 1 + 592 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 50592 + ... + 51792.

It is an arithmetic number, because the mean of its divisors is an integer number (2181630).

Almost surely, 2^61481592 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 61481592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87265200).

61481592 is an abundant number, since it is smaller than the sum of its proper divisors (113048808).

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

61481592 is a wasteful number, since it uses less digits than its factorization.

61481592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298 (or 1285 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 61481592 is about 7841.0198316290. The cubic root of 61481592 is about 394.6829523401.

The spelling of 61481592 in words is "sixty-one million, four hundred eighty-one thousand, five hundred ninety-two".