151556647 has 4 divisors (see below), whose sum is σ = 165334536. Its totient is φ = 137778760.

The previous prime is 151556641. The next prime is 151556689. The reversal of 151556647 is 746655151.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151556647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151556641) 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, 6888928 + ... + 6888949.

It is an arithmetic number, because the mean of its divisors is an integer number (41333634).

Almost surely, 2^151556647 is an apocalyptic number.

151556647 is a deficient number, since it is larger than the sum of its proper divisors (13777889).

151556647 is a wasteful number, since it uses less digits than its factorization.

151556647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13777888.

The product of its digits is 126000, while the sum is 40.

The square root of 151556647 is about 12310.8345371059. The cubic root of 151556647 is about 533.1609455443.

The spelling of 151556647 in words is "one hundred fifty-one million, five hundred fifty-six thousand, six hundred forty-seven".