2155214502 has 48 divisors (see below), whose sum is σ = 5340321792. Its totient is φ = 615360240.

The previous prime is 2155214447. The next prime is 2155214507. The reversal of 2155214502 is 2054125512.

2155214502 is a `hidden beast` number, since 2 + 155 + 2 + 1 + 4 + 502 = 666.

2155214502 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2155214502² = 9289899099262216008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2155214507) 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, 215227 + ... + 225017.

It is an arithmetic number, because the mean of its divisors is an integer number (111256704).

Almost surely, 2^2155214502 is an apocalyptic number.

2155214502 is an abundant number, since it is smaller than the sum of its proper divisors (3185107290).

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

2155214502 is a wasteful number, since it uses less digits than its factorization.

2155214502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11553 (or 11550 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 2155214502 is about 46424.2878459110. The cubic root of 2155214502 is about 1291.7054745487.

The spelling of 2155214502 in words is "two billion, one hundred fifty-five million, two hundred fourteen thousand, five hundred two".