151521772 has 24 divisors (see below), whose sum is σ = 269327520. Its totient is φ = 74580480.

The previous prime is 151521767. The next prime is 151521787. The reversal of 151521772 is 277125151.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71772 + ... + 73852.

It is an arithmetic number, because the mean of its divisors is an integer number (11221980).

Almost surely, 2^151521772 is an apocalyptic number.

It is an amenable number.

151521772 is a deficient number, since it is larger than the sum of its proper divisors (117805748).

151521772 is a wasteful number, since it uses less digits than its factorization.

151521772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361 (or 2359 counting only the distinct ones).

The product of its digits is 4900, while the sum is 31.

The square root of 151521772 is about 12309.4180203615. The cubic root of 151521772 is about 533.1200468336.

The spelling of 151521772 in words is "one hundred fifty-one million, five hundred twenty-one thousand, seven hundred seventy-two".