253340557 has 2 divisors, whose sum is σ = 253340558. Its totient is φ = 253340556.

The previous prime is 253340543. The next prime is 253340569. The reversal of 253340557 is 755043352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157025961 + 96314596 = 12531^2 + 9814^2 .

It is a cyclic number.

It is not a de Polignac number, because 253340557 - 2¹¹ = 253338509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253340057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126670278 + 126670279.

It is an arithmetic number, because the mean of its divisors is an integer number (126670279).

Almost surely, 2^253340557 is an apocalyptic number.

It is an amenable number.

253340557 is a deficient number, since it is larger than the sum of its proper divisors (1).

253340557 is an equidigital number, since it uses as much as digits as its factorization.

253340557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 34.

The square root of 253340557 is about 15916.6754380430. The cubic root of 253340557 is about 632.7540113035.

The spelling of 253340557 in words is "two hundred fifty-three million, three hundred forty thousand, five hundred fifty-seven".