155291455 has 16 divisors (see below), whose sum is σ = 203793408. Its totient is φ = 112660000.

The previous prime is 155291453. The next prime is 155291489. The reversal of 155291455 is 554192551.

It is a happy number.

It is not a de Polignac number, because 155291455 - 2¹ = 155291453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155291453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20430 + ... + 26980.

It is an arithmetic number, because the mean of its divisors is an integer number (12737088).

Almost surely, 2^155291455 is an apocalyptic number.

155291455 is a deficient number, since it is larger than the sum of its proper divisors (48501953).

155291455 is a wasteful number, since it uses less digits than its factorization.

155291455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6998.

The product of its digits is 45000, while the sum is 37.

The square root of 155291455 is about 12461.5992151890. The cubic root of 155291455 is about 537.5050138346.

The spelling of 155291455 in words is "one hundred fifty-five million, two hundred ninety-one thousand, four hundred fifty-five".