155270890 has 16 divisors (see below), whose sum is σ = 284225760. Its totient is φ = 61055440.

The previous prime is 155270887. The next prime is 155270957. The reversal of 155270890 is 98072551.

155270890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130996 + ... + 132175.

It is an arithmetic number, because the mean of its divisors is an integer number (17764110).

Almost surely, 2^155270890 is an apocalyptic number.

155270890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155270890 is a deficient number, since it is larger than the sum of its proper divisors (128954870).

155270890 is a wasteful number, since it uses less digits than its factorization.

155270890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263237.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 155270890 is about 12460.7740530033. The cubic root of 155270890 is about 537.4812858096.

The spelling of 155270890 in words is "one hundred fifty-five million, two hundred seventy thousand, eight hundred ninety".