153155550 has 72 divisors (see below), whose sum is σ = 403596936. Its totient is φ = 38428160.

The previous prime is 153155549. The next prime is 153155557. The reversal of 153155550 is 55551351.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153155557) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 41584 + ... + 45116.

It is an arithmetic number, because the mean of its divisors is an integer number (5605513).

Almost surely, 2^153155550 is an apocalyptic number.

153155550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 153155550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201798468).

153155550 is an abundant number, since it is smaller than the sum of its proper divisors (250441386).

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

153155550 is a wasteful number, since it uses less digits than its factorization.

153155550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3582 (or 3560 counting only the distinct ones).

The product of its (nonzero) digits is 9375, while the sum is 30.

The square root of 153155550 is about 12375.6030156110. The cubic root of 153155550 is about 535.0293168201.

The spelling of 153155550 in words is "one hundred fifty-three million, one hundred fifty-five thousand, five hundred fifty".