215151552 has 420 divisors, whose sum is σ = 817524400. Its totient is φ = 55883520.

The previous prime is 215151533. The next prime is 215151553. The reversal of 215151552 is 255151512.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

215151552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215151553) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 19559227 + ... + 19559237.

Almost surely, 2^215151552 is an apocalyptic number.

215151552 is a gapful number since it is divisible by the number (22) 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 215151552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408762200).

215151552 is an abundant number, since it is smaller than the sum of its proper divisors (602372848).

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

215151552 is an equidigital number, since it uses as much as digits as its factorization.

215151552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67 (or 23 counting only the distinct ones).

The product of its digits is 2500, while the sum is 27.

The square root of 215151552 is about 14668.0452685421. The cubic root of 215151552 is about 599.2133691372.

The spelling of 215151552 in words is "two hundred fifteen million, one hundred fifty-one thousand, five hundred fifty-two".