150661556 has 6 divisors (see below), whose sum is σ = 263657730. Its totient is φ = 75330776.

The previous prime is 150661549. The next prime is 150661571. The reversal of 150661556 is 655166051.

It can be written as a sum of positive squares in only one way, i.e., 140801956 + 9859600 = 11866^2 + 3140^2 .

It is a super-2 number, since 2×150661556² = 45397808912682272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18832691 + ... + 18832698.

It is an arithmetic number, because the mean of its divisors is an integer number (43942955).

Almost surely, 2^150661556 is an apocalyptic number.

It is an amenable number.

150661556 is a deficient number, since it is larger than the sum of its proper divisors (112996174).

150661556 is a wasteful number, since it uses less digits than its factorization.

150661556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37665393 (or 37665391 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 150661556 is about 12274.4269112656. The cubic root of 150661556 is about 532.1092592222.

The spelling of 150661556 in words is "one hundred fifty million, six hundred sixty-one thousand, five hundred fifty-six".