1253657451 has 16 divisors (see below), whose sum is σ = 1713414528. Its totient is φ = 814862400.

The previous prime is 1253657387. The next prime is 1253657491. The reversal of 1253657451 is 1547563521.

It is not a de Polignac number, because 1253657451 - 2⁶ = 1253657387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1253657491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309300 + ... + 313326.

It is an arithmetic number, because the mean of its divisors is an integer number (107088408).

Almost surely, 2^1253657451 is an apocalyptic number.

1253657451 is a deficient number, since it is larger than the sum of its proper divisors (459757077).

1253657451 is a wasteful number, since it uses less digits than its factorization.

1253657451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6602.

The product of its digits is 126000, while the sum is 39.

The square root of 1253657451 is about 35407.0254469364. The cubic root of 1253657451 is about 1078.2669538840.

The spelling of 1253657451 in words is "one billion, two hundred fifty-three million, six hundred fifty-seven thousand, four hundred fifty-one".