155000290 has 32 divisors (see below), whose sum is σ = 295848000. Its totient is φ = 58304448.

The previous prime is 155000269. The next prime is 155000297. The reversal of 155000290 is 92000551.

It is not an unprimeable number, because it can be changed into a prime (155000297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23476 + ... + 29344.

It is an arithmetic number, because the mean of its divisors is an integer number (9245250).

Almost surely, 2^155000290 is an apocalyptic number.

155000290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155000290 is a deficient number, since it is larger than the sum of its proper divisors (140847710).

155000290 is a wasteful number, since it uses less digits than its factorization.

155000290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6034.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 155000290 is about 12449.9112446636. The cubic root of 155000290 is about 537.1688705026.

The spelling of 155000290 in words is "one hundred fifty-five million, two hundred ninety", and thus it is an aban number.