155057130 has 24 divisors (see below), whose sum is σ = 403148772. Its totient is φ = 41348544.

The previous prime is 155057129. The next prime is 155057137. The reversal of 155057130 is 31750551.

155057130 is a `hidden beast` number, since 15 + 50 + 571 + 30 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 152992161 + 2064969 = 12369^2 + 1437^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 155057094 and 155057103.

It is not an unprimeable number, because it can be changed into a prime (155057137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 861339 + ... + 861518.

Almost surely, 2^155057130 is an apocalyptic number.

155057130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155057130 is an abundant number, since it is smaller than the sum of its proper divisors (248091642).

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

155057130 is a wasteful number, since it uses less digits than its factorization.

155057130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722870 (or 1722867 counting only the distinct ones).

The product of its (nonzero) digits is 2625, while the sum is 27.

The square root of 155057130 is about 12452.1937826232. The cubic root of 155057130 is about 537.2345240296.

The spelling of 155057130 in words is "one hundred fifty-five million, fifty-seven thousand, one hundred thirty".