155317400 has 96 divisors (see below), whose sum is σ = 434496000. Its totient is φ = 50440320.

The previous prime is 155317387. The next prime is 155317427. The reversal of 155317400 is 4713551.

It is a self number, because there is not a number n which added to its sum of digits gives 155317400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23681 + ... + 29519.

It is an arithmetic number, because the mean of its divisors is an integer number (4526000).

Almost surely, 2^155317400 is an apocalyptic number.

155317400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155317400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217248000).

155317400 is an abundant number, since it is smaller than the sum of its proper divisors (279178600).

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

155317400 is a wasteful number, since it uses less digits than its factorization.

155317400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5881 (or 5872 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 155317400 is about 12462.6401697233. The cubic root of 155317400 is about 537.5349463487.

The spelling of 155317400 in words is "one hundred fifty-five million, three hundred seventeen thousand, four hundred".