155401874 has 16 divisors (see below), whose sum is σ = 246628800. Its totient is φ = 73234224.

The previous prime is 155401859. The next prime is 155401901. The reversal of 155401874 is 478104551.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2894 + ... + 17865.

It is an arithmetic number, because the mean of its divisors is an integer number (15414300).

Almost surely, 2^155401874 is an apocalyptic number.

155401874 is a deficient number, since it is larger than the sum of its proper divisors (91226926).

155401874 is a wasteful number, since it uses less digits than its factorization.

155401874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20977.

The product of its (nonzero) digits is 22400, while the sum is 35.

The square root of 155401874 is about 12466.0287982982. The cubic root of 155401874 is about 537.6323801572.

The spelling of 155401874 in words is "one hundred fifty-five million, four hundred one thousand, eight hundred seventy-four".