155351047 has 4 divisors (see below), whose sum is σ = 155660400. Its totient is φ = 155041696.

The previous prime is 155351041. The next prime is 155351069. The reversal of 155351047 is 740153551.

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-155351047 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 (155351041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153922 + ... + 154927.

It is an arithmetic number, because the mean of its divisors is an integer number (38915100).

Almost surely, 2^155351047 is an apocalyptic number.

155351047 is a deficient number, since it is larger than the sum of its proper divisors (309353).

155351047 is an equidigital number, since it uses as much as digits as its factorization.

155351047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309352.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 155351047 is about 12463.9900112283. The cubic root of 155351047 is about 537.5737596271.

The spelling of 155351047 in words is "one hundred fifty-five million, three hundred fifty-one thousand, forty-seven".