155213200 has 60 divisors (see below), whose sum is σ = 389135808. Its totient is φ = 59382400.

The previous prime is 155213197. The next prime is 155213207. The reversal of 155213200 is 2312551.

It is a super-2 number, since 2×155213200² = 48182274908480000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155213207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 765 + ... + 17635.

Almost surely, 2^155213200 is an apocalyptic number.

155213200 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 155213200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194567904).

155213200 is an abundant number, since it is smaller than the sum of its proper divisors (233922608).

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

155213200 is a wasteful number, since it uses less digits than its factorization.

155213200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16912 (or 16901 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 155213200 is about 12458.4589737254. The cubic root of 155213200 is about 537.4147115441.

Adding to 155213200 its reverse (2312551), we get a palindrome (157525751).

It can be divided in two parts, 15521 and 3200, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 155213200 in words is "one hundred fifty-five million, two hundred thirteen thousand, two hundred".