155288540 has 48 divisors (see below), whose sum is σ = 376687584. Its totient is φ = 53145600.

The previous prime is 155288537. The next prime is 155288563. The reversal of 155288540 is 45882551.

It is a super-2 number, since 2×155288540² = 48229061310663200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155288494 and 155288503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17021 + ... + 24500.

It is an arithmetic number, because the mean of its divisors is an integer number (7847658).

Almost surely, 2^155288540 is an apocalyptic number.

155288540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155288540 is an abundant number, since it is smaller than the sum of its proper divisors (221399044).

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

155288540 is a wasteful number, since it uses less digits than its factorization.

155288540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41558 (or 41556 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 38.

The square root of 155288540 is about 12461.4822553338. The cubic root of 155288540 is about 537.5016506169.

The spelling of 155288540 in words is "one hundred fifty-five million, two hundred eighty-eight thousand, five hundred forty".