155431454 has 16 divisors (see below), whose sum is σ = 236882880. Its totient is φ = 76475520.

The previous prime is 155431453. The next prime is 155431483. The reversal of 155431454 is 454134551.

It is a self number, because there is not a number n which added to its sum of digits gives 155431454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155431453) 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 7 ways as a sum of consecutive naturals, for example, 82139 + ... + 84009.

It is an arithmetic number, because the mean of its divisors is an integer number (14805180).

Almost surely, 2^155431454 is an apocalyptic number.

155431454 is a deficient number, since it is larger than the sum of its proper divisors (81451426).

155431454 is a wasteful number, since it uses less digits than its factorization.

155431454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515.

The product of its digits is 24000, while the sum is 32.

The square root of 155431454 is about 12467.2151661869. The cubic root of 155431454 is about 537.6664899065. Note that the first 3 decimals are identical.

It can be divided in two parts, 15543 and 1454, that multiplied together give a palindrome (22599522).

The spelling of 155431454 in words is "one hundred fifty-five million, four hundred thirty-one thousand, four hundred fifty-four".