155361290 has 64 divisors (see below), whose sum is σ = 338688000. Its totient is φ = 50124096.

The previous prime is 155361281. The next prime is 155361293. The reversal of 155361290 is 92163551.

It is not an unprimeable number, because it can be changed into a prime (155361293) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 264377 + ... + 264963.

It is an arithmetic number, because the mean of its divisors is an integer number (5292000).

Almost surely, 2^155361290 is an apocalyptic number.

155361290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155361290 is an abundant number, since it is smaller than the sum of its proper divisors (183326710).

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

155361290 is a wasteful number, since it uses less digits than its factorization.

155361290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 155361290 is about 12464.4009081865. The cubic root of 155361290 is about 537.5855742605.

The spelling of 155361290 in words is "one hundred fifty-five million, three hundred sixty-one thousand, two hundred ninety".