253530551 has 2 divisors, whose sum is σ = 253530552. Its totient is φ = 253530550.

The previous prime is 253530521. The next prime is 253530559. The reversal of 253530551 is 155035352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253530551 - 2¹⁴ = 253514167 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253530559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126765275 + 126765276.

It is an arithmetic number, because the mean of its divisors is an integer number (126765276).

Almost surely, 2^253530551 is an apocalyptic number.

253530551 is a deficient number, since it is larger than the sum of its proper divisors (1).

253530551 is an equidigital number, since it uses as much as digits as its factorization.

253530551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11250, while the sum is 29.

The square root of 253530551 is about 15922.6427140723. The cubic root of 253530551 is about 632.9121507746.

The spelling of 253530551 in words is "two hundred fifty-three million, five hundred thirty thousand, five hundred fifty-one".