155251012 has 36 divisors (see below), whose sum is σ = 329797440. Its totient is φ = 63641424.

The previous prime is 155251009. The next prime is 155251013. The reversal of 155251012 is 210152551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (155251013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12712 + ... + 21727.

It is an arithmetic number, because the mean of its divisors is an integer number (9161040).

Almost surely, 2^155251012 is an apocalyptic number.

It is an amenable number.

155251012 is an abundant number, since it is smaller than the sum of its proper divisors (174546428).

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

155251012 is a wasteful number, since it uses less digits than its factorization.

155251012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34480 (or 34471 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 155251012 is about 12459.9764044720. The cubic root of 155251012 is about 537.4583484580.

The spelling of 155251012 in words is "one hundred fifty-five million, two hundred fifty-one thousand, twelve".