155401794 has 32 divisors (see below), whose sum is σ = 365653440. Its totient is φ = 48753216.

The previous prime is 155401789. The next prime is 155401843. The reversal of 155401794 is 497104551.

155401794 is a `hidden beast` number, since 1 + 554 + 0 + 17 + 94 = 666.

It is a super-4 number, since 4×155401794⁴ (a number of 34 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83724 + ... + 85559.

It is an arithmetic number, because the mean of its divisors is an integer number (11426670).

Almost surely, 2^155401794 is an apocalyptic number.

155401794 is an abundant number, since it is smaller than the sum of its proper divisors (210251646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155401794 is a wasteful number, since it uses less digits than its factorization.

155401794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169311 (or 169305 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 155401794 is about 12466.0255895775. The cubic root of 155401794 is about 537.6322879005.

The spelling of 155401794 in words is "one hundred fifty-five million, four hundred one thousand, seven hundred ninety-four".