155472772 has 48 divisors (see below), whose sum is σ = 339509632. Its totient is φ = 60652800.

The previous prime is 155472749. The next prime is 155472787. The reversal of 155472772 is 277274551.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23647 + ... + 29497.

Almost surely, 2^155472772 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 155472772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169754816).

155472772 is an abundant number, since it is smaller than the sum of its proper divisors (184036860).

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

155472772 is a wasteful number, since it uses less digits than its factorization.

155472772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5948 (or 5946 counting only the distinct ones).

The product of its digits is 137200, while the sum is 40.

The square root of 155472772 is about 12468.8721222090. The cubic root of 155472772 is about 537.7141279173.

The spelling of 155472772 in words is "one hundred fifty-five million, four hundred seventy-two thousand, seven hundred seventy-two".