155320254 has 24 divisors (see below), whose sum is σ = 348992280. Its totient is φ = 51773256.

The previous prime is 155320247. The next prime is 155320327. The reversal of 155320254 is 452023551.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159309 + ... + 160280.

It is an arithmetic number, because the mean of its divisors is an integer number (14541345).

Almost surely, 2^155320254 is an apocalyptic number.

155320254 is an abundant number, since it is smaller than the sum of its proper divisors (193672026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155320254 is an equidigital number, since it uses as much as digits as its factorization.

155320254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319606 (or 319594 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 155320254 is about 12462.7546714200. The cubic root of 155320254 is about 537.5382387795.

The spelling of 155320254 in words is "one hundred fifty-five million, three hundred twenty thousand, two hundred fifty-four".