155474451 has 64 divisors (see below), whose sum is σ = 260858880. Its totient is φ = 90720000.

The previous prime is 155474443. The next prime is 155474467. The reversal of 155474451 is 154474551.

It is not a de Polignac number, because 155474451 - 2³ = 155474443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155474551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1539301 + ... + 1539401.

It is an arithmetic number, because the mean of its divisors is an integer number (4075920).

Almost surely, 2^155474451 is an apocalyptic number.

155474451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

155474451 is a deficient number, since it is larger than the sum of its proper divisors (105384429).

155474451 is a wasteful number, since it uses less digits than its factorization.

155474451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 259 counting only the distinct ones).

The product of its digits is 56000, while the sum is 36.

The square root of 155474451 is about 12468.9394496886. The cubic root of 155474451 is about 537.7160635591.

The spelling of 155474451 in words is "one hundred fifty-five million, four hundred seventy-four thousand, four hundred fifty-one".