155023100 has 18 divisors (see below), whose sum is σ = 336400344. Its totient is φ = 62009200.

The previous prime is 155023097. The next prime is 155023117. The reversal of 155023100 is 1320551.

It is a super-2 number, since 2×155023100² = 48064323067220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 775016 + ... + 775215.

It is an arithmetic number, because the mean of its divisors is an integer number (18688908).

Almost surely, 2^155023100 is an apocalyptic number.

155023100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155023100 is an abundant number, since it is smaller than the sum of its proper divisors (181377244).

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

155023100 is a wasteful number, since it uses less digits than its factorization.

155023100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550245 (or 1550238 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 155023100 is about 12450.8272817512. The cubic root of 155023100 is about 537.1952193155.

Adding to 155023100 its reverse (1320551), we get a palindrome (156343651).

The spelling of 155023100 in words is "one hundred fifty-five million, twenty-three thousand, one hundred".