505000961 has 2 divisors, whose sum is σ = 505000962. Its totient is φ = 505000960.

The previous prime is 505000957. The next prime is 505000973. The reversal of 505000961 is 169000505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281199361 + 223801600 = 16769^2 + 14960^2 .

It is a cyclic number.

It is not a de Polignac number, because 505000961 - 2² = 505000957 is a prime.

It is a super-2 number, since 2×505000961² = 510051941221847042, 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 505000961.

It is not a weakly prime, because it can be changed into another prime (505000921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252500480 + 252500481.

It is an arithmetic number, because the mean of its divisors is an integer number (252500481).

Almost surely, 2^505000961 is an apocalyptic number.

It is an amenable number.

505000961 is a deficient number, since it is larger than the sum of its proper divisors (1).

505000961 is an equidigital number, since it uses as much as digits as its factorization.

505000961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 505000961 is about 22472.2264362034. The cubic root of 505000961 is about 796.3379293141.

The spelling of 505000961 in words is "five hundred five million, nine hundred sixty-one", and thus it is an aban number.