761121953 has 2 divisors, whose sum is σ = 761121954. Its totient is φ = 761121952.

The previous prime is 761121937. The next prime is 761121971. The reversal of 761121953 is 359121167.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 664453729 + 96668224 = 25777^2 + 9832^2 .

It is an emirp because it is prime and its reverse (359121167) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 761121953 - 2⁴ = 761121937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (761121983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380560976 + 380560977.

It is an arithmetic number, because the mean of its divisors is an integer number (380560977).

Almost surely, 2^761121953 is an apocalyptic number.

It is an amenable number.

761121953 is a deficient number, since it is larger than the sum of its proper divisors (1).

761121953 is an equidigital number, since it uses as much as digits as its factorization.

761121953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 35.

The square root of 761121953 is about 27588.4387561167. The cubic root of 761121953 is about 913.0293731480.

The spelling of 761121953 in words is "seven hundred sixty-one million, one hundred twenty-one thousand, nine hundred fifty-three".