155975454 has 12 divisors (see below), whose sum is σ = 337946856. Its totient is φ = 51991812.

The previous prime is 155975453. The next prime is 155975473. The reversal of 155975454 is 454579551.

It is a happy number.

155975454 is a `hidden beast` number, since 1 + 5 + 597 + 5 + 4 + 54 = 666.

It is a super-2 number, since 2×155975454² = 48656684501012232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155975453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4332634 + ... + 4332669.

It is an arithmetic number, because the mean of its divisors is an integer number (28162238).

Almost surely, 2^155975454 is an apocalyptic number.

155975454 is an abundant number, since it is smaller than the sum of its proper divisors (181971402).

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

155975454 is a wasteful number, since it uses less digits than its factorization.

155975454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8665311 (or 8665308 counting only the distinct ones).

The product of its digits is 630000, while the sum is 45.

The square root of 155975454 is about 12489.0133317248. The cubic root of 155975454 is about 538.2930254678.

The spelling of 155975454 in words is "one hundred fifty-five million, nine hundred seventy-five thousand, four hundred fifty-four".