155452100 has 18 divisors (see below), whose sum is σ = 337331274. Its totient is φ = 62180800.

The previous prime is 155452051. The next prime is 155452139. The reversal of 155452100 is 1254551.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1295044 + 154157056 = 1138^2 + 12416^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 777161 + ... + 777360.

Almost surely, 2^155452100 is an apocalyptic number.

155452100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155452100 is an abundant number, since it is smaller than the sum of its proper divisors (181879174).

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

155452100 is a wasteful number, since it uses less digits than its factorization.

155452100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554535 (or 1554528 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 155452100 is about 12468.0431503905. The cubic root of 155452100 is about 537.6902949786.

The spelling of 155452100 in words is "one hundred fifty-five million, four hundred fifty-two thousand, one hundred".