155302530 has 32 divisors (see below), whose sum is σ = 374194944. Its totient is φ = 41250816.

The previous prime is 155302513. The next prime is 155302559. The reversal of 155302530 is 35203551.

It is a self number, because there is not a number n which added to its sum of digits gives 155302530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2362 + ... + 17781.

It is an arithmetic number, because the mean of its divisors is an integer number (11693592).

Almost surely, 2^155302530 is an apocalyptic number.

155302530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155302530 is an abundant number, since it is smaller than the sum of its proper divisors (218892414).

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

155302530 is a wasteful number, since it uses less digits than its factorization.

155302530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20410.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 155302530 is about 12462.0435723841. The cubic root of 155302530 is about 537.5177913707.

The spelling of 155302530 in words is "one hundred fifty-five million, three hundred two thousand, five hundred thirty".