155350972 has 54 divisors (see below), whose sum is σ = 322826112. Its totient is φ = 65218608.

The previous prime is 155350967. The next prime is 155350991. The reversal of 155350972 is 279053551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1223173 + ... + 1223299.

Almost surely, 2^155350972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155350972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161413056).

155350972 is an abundant number, since it is smaller than the sum of its proper divisors (167475140).

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

155350972 is a wasteful number, since it uses less digits than its factorization.

155350972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 47250, while the sum is 37.

The square root of 155350972 is about 12463.9870025606. The cubic root of 155350972 is about 537.5736731176.

It can be divided in two parts, 1553 and 50972, that added together give a palindrome (52525).

The spelling of 155350972 in words is "one hundred fifty-five million, three hundred fifty thousand, nine hundred seventy-two".