155791454 has 16 divisors (see below), whose sum is σ = 287615328. Its totient is φ = 61631712.

The previous prime is 155791453. The next prime is 155791457. The reversal of 155791454 is 454197551.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155791453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427817 + ... + 428180.

It is an arithmetic number, because the mean of its divisors is an integer number (17975958).

Almost surely, 2^155791454 is an apocalyptic number.

155791454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

155791454 is a deficient number, since it is larger than the sum of its proper divisors (131823874).

155791454 is a wasteful number, since it uses less digits than its factorization.

155791454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856019.

The product of its digits is 126000, while the sum is 41.

The square root of 155791454 is about 12481.6446832939. The cubic root of 155791454 is about 538.0812722999.

The spelling of 155791454 in words is "one hundred fifty-five million, seven hundred ninety-one thousand, four hundred fifty-four".