153561540 has 48 divisors (see below), whose sum is σ = 469062720. Its totient is φ = 37226880.

The previous prime is 153561533. The next prime is 153561571. The reversal of 153561540 is 45165351.

It is a super-2 number, since 2×153561540² = 47162293134343200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 153561498 and 153561507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115675 + ... + 116994.

It is an arithmetic number, because the mean of its divisors is an integer number (9772140).

Almost surely, 2^153561540 is an apocalyptic number.

153561540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

153561540 is an abundant number, since it is smaller than the sum of its proper divisors (315501180).

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

153561540 is a wasteful number, since it uses less digits than its factorization.

153561540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232692 (or 232690 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 153561540 is about 12391.9949967711. The cubic root of 153561540 is about 535.5016577386.

The spelling of 153561540 in words is "one hundred fifty-three million, five hundred sixty-one thousand, five hundred forty".