155251130 has 32 divisors (see below), whose sum is σ = 282893904. Its totient is φ = 61341696.

The previous prime is 155251093. The next prime is 155251139. The reversal of 155251130 is 31152551.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 43335889 + 111915241 = 6583^2 + 10579^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155251096 and 155251105.

It is not an unprimeable number, because it can be changed into a prime (155251139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495854 + ... + 496166.

Almost surely, 2^155251130 is an apocalyptic number.

155251130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155251130 is a deficient number, since it is larger than the sum of its proper divisors (127642774).

155251130 is a wasteful number, since it uses less digits than its factorization.

155251130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 155251130 is about 12459.9811396326. The cubic root of 155251130 is about 537.4584846248.

The spelling of 155251130 in words is "one hundred fifty-five million, two hundred fifty-one thousand, one hundred thirty".