155452550 has 48 divisors (see below), whose sum is σ = 317390400. Its totient is φ = 56176800.

The previous prime is 155452543. The next prime is 155452559. The reversal of 155452550 is 55254551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155452559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 97661 + ... + 99239.

It is an arithmetic number, because the mean of its divisors is an integer number (6612300).

Almost surely, 2^155452550 is an apocalyptic number.

155452550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155452550 is an abundant number, since it is smaller than the sum of its proper divisors (161937850).

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

155452550 is a wasteful number, since it uses less digits than its factorization.

155452550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781 (or 1776 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 32.

The square root of 155452550 is about 12468.0611965133. The cubic root of 155452550 is about 537.6908138102.

The spelling of 155452550 in words is "one hundred fifty-five million, four hundred fifty-two thousand, five hundred fifty".