155525372 has 12 divisors (see below), whose sum is σ = 272656776. Its totient is φ = 77623440.

The previous prime is 155525371. The next prime is 155525387. The reversal of 155525372 is 273525551.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155525371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32279 + ... + 36782.

It is an arithmetic number, because the mean of its divisors is an integer number (22721398).

Almost surely, 2^155525372 is an apocalyptic number.

It is an amenable number.

155525372 is a deficient number, since it is larger than the sum of its proper divisors (117131404).

155525372 is a wasteful number, since it uses less digits than its factorization.

155525372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69628 (or 69626 counting only the distinct ones).

The product of its digits is 52500, while the sum is 35.

The square root of 155525372 is about 12470.9811963614. The cubic root of 155525372 is about 537.7747614153.

The spelling of 155525372 in words is "one hundred fifty-five million, five hundred twenty-five thousand, three hundred seventy-two".