153661560 has 96 divisors (see below), whose sum is σ = 499238640. Its totient is φ = 37819392.

The previous prime is 153661549. The next prime is 153661603. The reversal of 153661560 is 65166351.

It is a super-2 number, since 2×153661560² = 47223750043267200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16492 + ... + 24068.

Almost surely, 2^153661560 is an apocalyptic number.

153661560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 153661560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249619320).

153661560 is an abundant number, since it is smaller than the sum of its proper divisors (345577080).

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

153661560 is a wasteful number, since it uses less digits than its factorization.

153661560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7617 (or 7600 counting only the distinct ones).

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

The square root of 153661560 is about 12396.0300096442. The cubic root of 153661560 is about 535.6178961564.

The spelling of 153661560 in words is "one hundred fifty-three million, six hundred sixty-one thousand, five hundred sixty".