155797000 has 32 divisors (see below), whose sum is σ = 364567320. Its totient is φ = 62318400.

The previous prime is 155796997. The next prime is 155797003. The reversal of 155797000 is 797551.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (155796997) and next prime (155797003).

It can be written as a sum of positive squares in 4 ways, for example, as 84529636 + 71267364 = 9194^2 + 8442^2 .

It is not an unprimeable number, because it can be changed into a prime (155797003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76899 + ... + 78898.

Almost surely, 2^155797000 is an apocalyptic number.

155797000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155797000 is an abundant number, since it is smaller than the sum of its proper divisors (208770320).

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

155797000 is a wasteful number, since it uses less digits than its factorization.

155797000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155818 (or 155804 counting only the distinct ones).

The product of its (nonzero) digits is 11025, while the sum is 34.

The square root of 155797000 is about 12481.8668475513. The cubic root of 155797000 is about 538.0876572529.

The spelling of 155797000 in words is "one hundred fifty-five million, seven hundred ninety-seven thousand".