521952979 has 2 divisors, whose sum is σ = 521952980. Its totient is φ = 521952978.

The previous prime is 521952973. The next prime is 521953067. The reversal of 521952979 is 979259125.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 521952979 - 2⁹ = 521952467 is a prime.

It is not a weakly prime, because it can be changed into another prime (521952973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260976489 + 260976490.

It is an arithmetic number, because the mean of its divisors is an integer number (260976490).

Almost surely, 2^521952979 is an apocalyptic number.

521952979 is a deficient number, since it is larger than the sum of its proper divisors (1).

521952979 is an equidigital number, since it uses as much as digits as its factorization.

521952979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 510300, while the sum is 49.

The square root of 521952979 is about 22846.2902677875. The cubic root of 521952979 is about 805.1506110698.

The spelling of 521952979 in words is "five hundred twenty-one million, nine hundred fifty-two thousand, nine hundred seventy-nine".