251573041 has 2 divisors, whose sum is σ = 251573042. Its totient is φ = 251573040.

The previous prime is 251573039. The next prime is 251573081. The reversal of 251573041 is 140375152.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181683441 + 69889600 = 13479^2 + 8360^2 .

It is a cyclic number.

It is not a de Polignac number, because 251573041 - 2¹ = 251573039 is a prime.

Together with 251573039, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (251573081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125786520 + 125786521.

It is an arithmetic number, because the mean of its divisors is an integer number (125786521).

Almost surely, 2^251573041 is an apocalyptic number.

It is an amenable number.

251573041 is a deficient number, since it is larger than the sum of its proper divisors (1).

251573041 is an equidigital number, since it uses as much as digits as its factorization.

251573041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 251573041 is about 15861.0542209527. The cubic root of 251573041 is about 631.2790350204.

The spelling of 251573041 in words is "two hundred fifty-one million, five hundred seventy-three thousand, forty-one".