150656721 has 8 divisors (see below), whose sum is σ = 201341280. Its totient is φ = 100204992.

The previous prime is 150656717. The next prime is 150656747. The reversal of 150656721 is 127656051.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 150656721 - 2² = 150656717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (150656021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56691 + ... + 59288.

It is an arithmetic number, because the mean of its divisors is an integer number (25167660).

Almost surely, 2^150656721 is an apocalyptic number.

It is an amenable number.

150656721 is a deficient number, since it is larger than the sum of its proper divisors (50684559).

150656721 is a wasteful number, since it uses less digits than its factorization.

150656721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116415.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 150656721 is about 12274.2299554799. The cubic root of 150656721 is about 532.1035670473.

The spelling of 150656721 in words is "one hundred fifty million, six hundred fifty-six thousand, seven hundred twenty-one".