61375392 has 144 divisors (see below), whose sum is σ = 191023560. Its totient is φ = 18690048.

The previous prime is 61375361. The next prime is 61375403. The reversal of 61375392 is 29357316.

61375392 is a `hidden beast` number, since 613 + 7 + 5 + 39 + 2 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1838736 + 59536656 = 1356^2 + 7716^2 .

It is a tau number, because it is divible by the number of its divisors (144).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 632688 + ... + 632784.

Almost surely, 2^61375392 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 61375392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95511780).

61375392 is an abundant number, since it is smaller than the sum of its proper divisors (129648168).

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

61375392 is a wasteful number, since it uses less digits than its factorization.

61375392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 115 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 61375392 is about 7834.2448264016. The cubic root of 61375392 is about 394.4555699890.

The spelling of 61375392 in words is "sixty-one million, three hundred seventy-five thousand, three hundred ninety-two".