61553168 has 30 divisors (see below), whose sum is σ = 121207086. Its totient is φ = 30281856.

The previous prime is 61553161. The next prime is 61553183. The reversal of 61553168 is 86135516.

It can be written as a sum of positive squares in only one way, i.e., 60403984 + 1149184 = 7772^2 + 1072^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (61553161) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71396 + ... + 72252.

Almost surely, 2^61553168 is an apocalyptic number.

It is an amenable number.

61553168 is a deficient number, since it is larger than the sum of its proper divisors (59653918).

61553168 is an equidigital number, since it uses as much as digits as its factorization.

61553168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999 (or 926 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 61553168 is about 7845.5827062112. The cubic root of 61553168 is about 394.8360543797.

The spelling of 61553168 in words is "sixty-one million, five hundred fifty-three thousand, one hundred sixty-eight".