155361252 has 24 divisors (see below), whose sum is σ = 381589600. Its totient is φ = 49061376.

The previous prime is 155361223. The next prime is 155361253. The reversal of 155361252 is 252163551.

It is a happy number.

155361252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (155361253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340477 + ... + 340932.

Almost surely, 2^155361252 is an apocalyptic number.

155361252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155361252 is an abundant number, since it is smaller than the sum of its proper divisors (226228348).

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

155361252 is a wasteful number, since it uses less digits than its factorization.

155361252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681435 (or 681433 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 155361252 is about 12464.3993838452. The cubic root of 155361252 is about 537.5855304310.

The spelling of 155361252 in words is "one hundred fifty-five million, three hundred sixty-one thousand, two hundred fifty-two".