155553051 has 4 divisors (see below), whose sum is σ = 207404072. Its totient is φ = 103702032.

The previous prime is 155553049. The next prime is 155553061. The reversal of 155553051 is 150355551.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 155553051 - 2¹ = 155553049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155553001) 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 3 ways as a sum of consecutive naturals, for example, 25925506 + ... + 25925511.

It is an arithmetic number, because the mean of its divisors is an integer number (51851018).

Almost surely, 2^155553051 is an apocalyptic number.

155553051 is a deficient number, since it is larger than the sum of its proper divisors (51851021).

155553051 is an equidigital number, since it uses as much as digits as its factorization.

155553051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51851020.

The product of its (nonzero) digits is 9375, while the sum is 30.

The square root of 155553051 is about 12472.0908832481. The cubic root of 155553051 is about 537.8066622867.

The spelling of 155553051 in words is "one hundred fifty-five million, five hundred fifty-three thousand, fifty-one".