1253027551 has 4 divisors (see below), whose sum is σ = 1326735072. Its totient is φ = 1179320032.

The previous prime is 1253027539. The next prime is 1253027623. The reversal of 1253027551 is 1557203521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1253027551 - 2²⁵ = 1219473119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253027521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36853735 + ... + 36853768.

It is an arithmetic number, because the mean of its divisors is an integer number (331683768).

Almost surely, 2^1253027551 is an apocalyptic number.

1253027551 is a deficient number, since it is larger than the sum of its proper divisors (73707521).

1253027551 is an equidigital number, since it uses as much as digits as its factorization.

1253027551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73707520.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 1253027551 is about 35398.1292019790. The cubic root of 1253027551 is about 1078.0863319392.

The spelling of 1253027551 in words is "one billion, two hundred fifty-three million, twenty-seven thousand, five hundred fifty-one".