155355453 has 24 divisors (see below), whose sum is σ = 245363040. Its totient is φ = 93939360.

The previous prime is 155355439. The next prime is 155355479. The reversal of 155355453 is 354553551.

155355453 is a `hidden beast` number, since 1 + 5 + 53 + 554 + 53 = 666.

It is not a de Polignac number, because 155355453 - 2²² = 151161149 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155355493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48850 + ... + 51932.

It is an arithmetic number, because the mean of its divisors is an integer number (10223460).

Almost surely, 2^155355453 is an apocalyptic number.

It is an amenable number.

155355453 is a deficient number, since it is larger than the sum of its proper divisors (90007587).

155355453 is a wasteful number, since it uses less digits than its factorization.

155355453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3609 (or 3606 counting only the distinct ones).

The product of its digits is 112500, while the sum is 36.

The square root of 155355453 is about 12464.1667591540. The cubic root of 155355453 is about 537.5788417248.

The spelling of 155355453 in words is "one hundred fifty-five million, three hundred fifty-five thousand, four hundred fifty-three".