151772 has 12 divisors (see below), whose sum is σ = 279720. Its totient is φ = 71856.

The previous prime is 151771. The next prime is 151783. The reversal of 151772 is 277151.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151771) 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, 923 + ... + 1074.

It is an arithmetic number, because the mean of its divisors is an integer number (23310).

2¹⁵¹⁷⁷² is an apocalyptic number.

It is an amenable number.

151772 is a deficient number, since it is larger than the sum of its proper divisors (127948).

151772 is a wasteful number, since it uses less digits than its factorization.

151772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020 (or 2018 counting only the distinct ones).

The product of its digits is 490, while the sum is 23.

The square root of 151772 is about 389.5792602283. The cubic root of 151772 is about 53.3413356048.

The spelling of 151772 in words is "one hundred fifty-one thousand, seven hundred seventy-two".