61455168 has 42 divisors (see below), whose sum is σ = 176151794. Its totient is φ = 20484864.

The previous prime is 61455161. The next prime is 61455169. The reversal of 61455168 is 86155416.

61455168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 52881984 + 8573184 = 7272^2 + 2928^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61455161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52771 + ... + 53922.

Almost surely, 2^61455168 is an apocalyptic number.

It is an amenable number.

61455168 is an abundant number, since it is smaller than the sum of its proper divisors (114696626).

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

61455168 is a wasteful number, since it uses less digits than its factorization.

61455168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106711 (or 106698 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 61455168 is about 7839.3346656461. The cubic root of 61455168 is about 394.6264010134.

The spelling of 61455168 in words is "sixty-one million, four hundred fifty-five thousand, one hundred sixty-eight".