61129152 has 84 divisors (see below), whose sum is σ = 200259696. Its totient is φ = 17464320.

The previous prime is 61129141. The next prime is 61129153. The reversal of 61129152 is 25192116.

It is a tau number, because it is divible by the number of its divisors (84).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61129153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3549 + ... + 11612.

It is an arithmetic number, because the mean of its divisors is an integer number (2384044).

Almost surely, 2^61129152 is an apocalyptic number.

It is an amenable number.

61129152 is an abundant number, since it is smaller than the sum of its proper divisors (139130544).

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

61129152 is a wasteful number, since it uses less digits than its factorization.

61129152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15186 (or 15173 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 61129152 is about 7818.5134136868. The cubic root of 61129152 is about 393.9273402219.

The spelling of 61129152 in words is "sixty-one million, one hundred twenty-nine thousand, one hundred fifty-two".