2251368450 has 72 divisors (see below), whose sum is σ = 6162867828. Its totient is φ = 589031040.

The previous prime is 2251368439. The next prime is 2251368467. The reversal of 2251368450 is 548631522.

2251368450 is a `hidden beast` number, since 2 + 251 + 368 + 45 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 892635129 + 1358733321 = 29877^2 + 36861^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23349 + ... + 71048.

Almost surely, 2^2251368450 is an apocalyptic number.

2251368450 is an abundant number, since it is smaller than the sum of its proper divisors (3911499378).

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

2251368450 is a wasteful number, since it uses less digits than its factorization.

2251368450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94468 (or 94460 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 2251368450 is about 47448.5874394591. The cubic root of 2251368450 is about 1310.6362990847.

Adding to 2251368450 its reverse (548631522), we get a palindrome (2799999972).

It can be divided in two parts, 225136 and 8450, that added together give a triangular number (233586 = T₆₈₃).

The spelling of 2251368450 in words is "two billion, two hundred fifty-one million, three hundred sixty-eight thousand, four hundred fifty".