61158432 has 24 divisors (see below), whose sum is σ = 160541136. Its totient is φ = 20386112.

The previous prime is 61158389. The next prime is 61158439. The reversal of 61158432 is 23485116.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 61158432.

It is not an unprimeable number, because it can be changed into a prime (61158439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318438 + ... + 318629.

It is an arithmetic number, because the mean of its divisors is an integer number (6689214).

Almost surely, 2^61158432 is an apocalyptic number.

It is an amenable number.

61158432 is an abundant number, since it is smaller than the sum of its proper divisors (99382704).

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

61158432 is a wasteful number, since it uses less digits than its factorization.

61158432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637080 (or 637072 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 61158432 is about 7820.3856682391. The cubic root of 61158432 is about 393.9902253925.

The spelling of 61158432 in words is "sixty-one million, one hundred fifty-eight thousand, four hundred thirty-two".