2251450140 has 48 divisors (see below), whose sum is σ = 6331627680. Its totient is φ = 597761280.

The previous prime is 2251450139. The next prime is 2251450153. The reversal of 2251450140 is 410541522.

It is a self number, because there is not a number n which added to its sum of digits gives 2251450140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68191 + ... + 95670.

It is an arithmetic number, because the mean of its divisors is an integer number (131908910).

Almost surely, 2^2251450140 is an apocalyptic number.

2251450140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2251450140 is an abundant number, since it is smaller than the sum of its proper divisors (4080177540).

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

2251450140 is a wasteful number, since it uses less digits than its factorization.

2251450140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164102 (or 164100 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2251450140 is about 47449.4482581199. The cubic root of 2251450140 is about 1310.6521508635.

Adding to 2251450140 its reverse (410541522), we get a palindrome (2661991662).

The spelling of 2251450140 in words is "two billion, two hundred fifty-one million, four hundred fifty thousand, one hundred forty".