505253971 has 2 divisors, whose sum is σ = 505253972. Its totient is φ = 505253970.

The previous prime is 505253941. The next prime is 505254007. The reversal of 505253971 is 179352505.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 505253971 - 2¹⁵ = 505221203 is a prime.

It is a super-2 number, since 2×505253971² = 510563150422537682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 505253971.

It is not a weakly prime, because it can be changed into another prime (505253941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252626985 + 252626986.

It is an arithmetic number, because the mean of its divisors is an integer number (252626986).

Almost surely, 2^505253971 is an apocalyptic number.

505253971 is a deficient number, since it is larger than the sum of its proper divisors (1).

505253971 is an equidigital number, since it uses as much as digits as its factorization.

505253971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47250, while the sum is 37.

The square root of 505253971 is about 22477.8551245442. The cubic root of 505253971 is about 796.4708979197.

The spelling of 505253971 in words is "five hundred five million, two hundred fifty-three thousand, nine hundred seventy-one".