2157550360 has 96 divisors (see below), whose sum is σ = 5699430000. Its totient is φ = 732872448.

The previous prime is 2157550357. The next prime is 2157550361. The reversal of 2157550360 is 630557512.

It is a super-2 number, since 2×2157550360² = 9310047111872259200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157550361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 208591 + ... + 218689.

Almost surely, 2^2157550360 is an apocalyptic number.

2157550360 is a gapful number since it is divisible by the number (20) 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 2157550360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2849715000).

2157550360 is an abundant number, since it is smaller than the sum of its proper divisors (3541879640).

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

2157550360 is a wasteful number, since it uses less digits than its factorization.

2157550360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10233 (or 10222 counting only the distinct ones).

The product of its (nonzero) digits is 31500, while the sum is 34.

The square root of 2157550360 is about 46449.4387479547. The cubic root of 2157550360 is about 1292.1719634873.

The spelling of 2157550360 in words is "two billion, one hundred fifty-seven million, five hundred fifty thousand, three hundred sixty".