155651930 has 48 divisors (see below), whose sum is σ = 336462336. Its totient is φ = 51639840.

The previous prime is 155651929. The next prime is 155651939. The reversal of 155651930 is 39156551.

It is a happy number.

155651930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (155651939) 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, 10067 + ... + 20313.

It is an arithmetic number, because the mean of its divisors is an integer number (7009632).

Almost surely, 2^155651930 is an apocalyptic number.

155651930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155651930 is an abundant number, since it is smaller than the sum of its proper divisors (180810406).

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

155651930 is a wasteful number, since it uses less digits than its factorization.

155651930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10299 (or 10292 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 155651930 is about 12476.0542640692. The cubic root of 155651930 is about 537.9205923809.

The spelling of 155651930 in words is "one hundred fifty-five million, six hundred fifty-one thousand, nine hundred thirty".