61656153 has 16 divisors (see below), whose sum is σ = 88710720. Its totient is φ = 37865664.

The previous prime is 61656149. The next prime is 61656163. The reversal of 61656153 is 35165616.

It is not a de Polignac number, because 61656153 - 2² = 61656149 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61656163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22618 + ... + 25196.

It is an arithmetic number, because the mean of its divisors is an integer number (5544420).

Almost surely, 2^61656153 is an apocalyptic number.

It is an amenable number.

61656153 is a deficient number, since it is larger than the sum of its proper divisors (27054567).

61656153 is a wasteful number, since it uses less digits than its factorization.

61656153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3208.

The product of its digits is 16200, while the sum is 33.

The square root of 61656153 is about 7852.1432106145. The cubic root of 61656153 is about 395.0561325985.

The spelling of 61656153 in words is "sixty-one million, six hundred fifty-six thousand, one hundred fifty-three".