501145237 has 2 divisors, whose sum is σ = 501145238. Its totient is φ = 501145236.

The previous prime is 501145231. The next prime is 501145241. The reversal of 501145237 is 732541105.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 475196401 + 25948836 = 21799^2 + 5094^2 .

It is a cyclic number.

It is not a de Polignac number, because 501145237 - 2¹¹ = 501143189 is a prime.

It is a super-2 number, since 2×501145237² = 502293097135572338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501145231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250572618 + 250572619.

It is an arithmetic number, because the mean of its divisors is an integer number (250572619).

Almost surely, 2^501145237 is an apocalyptic number.

It is an amenable number.

501145237 is a deficient number, since it is larger than the sum of its proper divisors (1).

501145237 is an equidigital number, since it uses as much as digits as its factorization.

501145237 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 501145237 is about 22386.2734058172. The cubic root of 501145237 is about 794.3060473817.

The spelling of 501145237 in words is "five hundred one million, one hundred forty-five thousand, two hundred thirty-seven".