155253405 has 32 divisors (see below), whose sum is σ = 253554048. Its totient is φ = 81100800.

The previous prime is 155253403. The next prime is 155253419. The reversal of 155253405 is 504352551.

It is a happy number.

155253405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155253405 - 2¹ = 155253403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155253403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 241885 + ... + 242525.

It is an arithmetic number, because the mean of its divisors is an integer number (7923564).

Almost surely, 2^155253405 is an apocalyptic number.

155253405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155253405 is a deficient number, since it is larger than the sum of its proper divisors (98300643).

155253405 is a wasteful number, since it uses less digits than its factorization.

155253405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 155253405 is about 12460.0724315712. The cubic root of 155253405 is about 537.4611098597.

The spelling of 155253405 in words is "one hundred fifty-five million, two hundred fifty-three thousand, four hundred five".