155226520 has 16 divisors (see below), whose sum is σ = 349259760. Its totient is φ = 62090592.

The previous prime is 155226503. The next prime is 155226521. The reversal of 155226520 is 25622551.

155226520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155226520² = 48190545022620800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155226521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1940292 + ... + 1940371.

It is an arithmetic number, because the mean of its divisors is an integer number (21828735).

Almost surely, 2^155226520 is an apocalyptic number.

155226520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155226520 is an abundant number, since it is smaller than the sum of its proper divisors (194033240).

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

155226520 is a wasteful number, since it uses less digits than its factorization.

155226520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880674 (or 3880670 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 155226520 is about 12458.9935388056. The cubic root of 155226520 is about 537.4300842899.

The spelling of 155226520 in words is "one hundred fifty-five million, two hundred twenty-six thousand, five hundred twenty".