155910450 has 96 divisors (see below), whose sum is σ = 399974400. Its totient is φ = 40173120.

The previous prime is 155910431. The next prime is 155910457. The reversal of 155910450 is 54019551.

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

It is not an unprimeable number, because it can be changed into a prime (155910457) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 699039 + ... + 699261.

It is an arithmetic number, because the mean of its divisors is an integer number (4166400).

Almost surely, 2^155910450 is an apocalyptic number.

155910450 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 155910450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199987200).

155910450 is an abundant number, since it is smaller than the sum of its proper divisors (244063950).

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

155910450 is a wasteful number, since it uses less digits than its factorization.

155910450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 155910450 is about 12486.4106131426. The cubic root of 155910450 is about 538.2182357898.

The spelling of 155910450 in words is "one hundred fifty-five million, nine hundred ten thousand, four hundred fifty".