451497140 has 24 divisors (see below), whose sum is σ = 949261992. Its totient is φ = 180385920.

The previous prime is 451497131. The next prime is 451497149. The reversal of 451497140 is 41794154.

It is an interprime number because it is at equal distance from previous prime (451497131) and next prime (451497149).

It can be written as a sum of positive squares in 4 ways, for example, as 151930276 + 299566864 = 12326^2 + 17308^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 451497140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451497149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4670 + ... + 30410.

It is an arithmetic number, because the mean of its divisors is an integer number (39552583).

Almost surely, 2^451497140 is an apocalyptic number.

It is an amenable number.

451497140 is an abundant number, since it is smaller than the sum of its proper divisors (497764852).

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

451497140 is a wasteful number, since it uses less digits than its factorization.

451497140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26627 (or 26625 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 451497140 is about 21248.4620619940. The cubic root of 451497140 is about 767.1583231590.

The spelling of 451497140 in words is "four hundred fifty-one million, four hundred ninety-seven thousand, one hundred forty".