1253453551 has 32 divisors (see below), whose sum is σ = 1512898560. Its totient is φ = 1016136576.

The previous prime is 1253453549. The next prime is 1253453587. The reversal of 1253453551 is 1553543521.

It is not a de Polignac number, because 1253453551 - 2¹ = 1253453549 is a prime.

It is a super-2 number, since 2×1253453551² = 3142291609029019202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253453521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1742970 + ... + 1743688.

It is an arithmetic number, because the mean of its divisors is an integer number (47278080).

Almost surely, 2^1253453551 is an apocalyptic number.

1253453551 is a deficient number, since it is larger than the sum of its proper divisors (259445009).

1253453551 is a wasteful number, since it uses less digits than its factorization.

1253453551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943.

The product of its digits is 45000, while the sum is 34.

The square root of 1253453551 is about 35404.1459577830. The cubic root of 1253453551 is about 1078.2084927915.

The spelling of 1253453551 in words is "one billion, two hundred fifty-three million, four hundred fifty-three thousand, five hundred fifty-one".