155158372 has 6 divisors (see below), whose sum is σ = 271527158. Its totient is φ = 77579184.

The previous prime is 155158363. The next prime is 155158373. The reversal of 155158372 is 273851551.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 111386916 + 43771456 = 10554^2 + 6616^2 .

It is not an unprimeable number, because it can be changed into a prime (155158373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19394793 + ... + 19394800.

Almost surely, 2^155158372 is an apocalyptic number.

It is an amenable number.

155158372 is a deficient number, since it is larger than the sum of its proper divisors (116368786).

155158372 is a wasteful number, since it uses less digits than its factorization.

155158372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38789597 (or 38789595 counting only the distinct ones).

The product of its digits is 42000, while the sum is 37.

The square root of 155158372 is about 12456.2583467107. The cubic root of 155158372 is about 537.3514247361.

The spelling of 155158372 in words is "one hundred fifty-five million, one hundred fifty-eight thousand, three hundred seventy-two".