2251451000 has 32 divisors (see below), whose sum is σ = 5268397680. Its totient is φ = 900580000.

The previous prime is 2251450951. The next prime is 2251451021. The reversal of 2251451000 is 1541522.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1124726 + ... + 1126725.

Almost surely, 2^2251451000 is an apocalyptic number.

2251451000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2251451000 is an abundant number, since it is smaller than the sum of its proper divisors (3016946680).

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

2251451000 is a wasteful number, since it uses less digits than its factorization.

2251451000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251472 (or 2251458 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2251451000 is about 47449.4573203951. The cubic root of 2251451000 is about 1310.6523177427.

Adding to 2251451000 its reverse (1541522), we get a palindrome (2252992522).

The spelling of 2251451000 in words is "two billion, two hundred fifty-one million, four hundred fifty-one thousand".