253400551 has 2 divisors, whose sum is σ = 253400552. Its totient is φ = 253400550.

The previous prime is 253400519. The next prime is 253400561. The reversal of 253400551 is 155004352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253400551 - 2⁵ = 253400519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253400561) 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 as a sum of consecutive naturals, namely, 126700275 + 126700276.

It is an arithmetic number, because the mean of its divisors is an integer number (126700276).

Almost surely, 2^253400551 is an apocalyptic number.

253400551 is a deficient number, since it is larger than the sum of its proper divisors (1).

253400551 is an equidigital number, since it uses as much as digits as its factorization.

253400551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 253400551 is about 15918.5599537144. The cubic root of 253400551 is about 632.8039552057.

The spelling of 253400551 in words is "two hundred fifty-three million, four hundred thousand, five hundred fifty-one".