1522564997 has 2 divisors, whose sum is σ = 1522564998. Its totient is φ = 1522564996.

The previous prime is 1522564963. The next prime is 1522565021. The reversal of 1522564997 is 7994652251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1400705476 + 121859521 = 37426^2 + 11039^2 .

It is a cyclic number.

It is not a de Polignac number, because 1522564997 - 2⁶ = 1522564933 is a prime.

It is a super-2 number, since 2×1522564997² = 4636408340179220018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1522564937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 761282498 + 761282499.

It is an arithmetic number, because the mean of its divisors is an integer number (761282499).

Almost surely, 2^1522564997 is an apocalyptic number.

It is an amenable number.

1522564997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1522564997 is an equidigital number, since it uses as much as digits as its factorization.

1522564997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1360800, while the sum is 50.

The square root of 1522564997 is about 39020.0589056449. The cubic root of 1522564997 is about 1150.4258024980.

The spelling of 1522564997 in words is "one billion, five hundred twenty-two million, five hundred sixty-four thousand, nine hundred ninety-seven".