155047647 has 8 divisors (see below), whose sum is σ = 213399040. Its totient is φ = 100030680.

The previous prime is 155047589. The next prime is 155047661. The reversal of 155047647 is 746740551.

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

It is not a de Polignac number, because 155047647 - 2¹⁵ = 155014879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155047687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833497 + ... + 833682.

It is an arithmetic number, because the mean of its divisors is an integer number (26674880).

Almost surely, 2^155047647 is an apocalyptic number.

155047647 is a deficient number, since it is larger than the sum of its proper divisors (58351393).

155047647 is a wasteful number, since it uses less digits than its factorization.

155047647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667213.

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 155047647 is about 12451.8130005233. The cubic root of 155047647 is about 537.2235717248.

The spelling of 155047647 in words is "one hundred fifty-five million, forty-seven thousand, six hundred forty-seven".