155351087 has 4 divisors (see below), whose sum is σ = 163527480. Its totient is φ = 147174696.

The previous prime is 155351069. The next prime is 155351093. The reversal of 155351087 is 780153551.

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

It is a cyclic number.

It is not a de Polignac number, because 155351087 - 2⁶ = 155351023 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 (155351587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4088168 + ... + 4088205.

It is an arithmetic number, because the mean of its divisors is an integer number (40881870).

Almost surely, 2^155351087 is an apocalyptic number.

155351087 is a deficient number, since it is larger than the sum of its proper divisors (8176393).

155351087 is an equidigital number, since it uses as much as digits as its factorization.

155351087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8176392.

The product of its (nonzero) digits is 21000, while the sum is 35.

The square root of 155351087 is about 12463.9916158508. The cubic root of 155351087 is about 537.5738057655.

The spelling of 155351087 in words is "one hundred fifty-five million, three hundred fifty-one thousand, eighty-seven".