1170401521 has 2 divisors, whose sum is σ = 1170401522. Its totient is φ = 1170401520.

The previous prime is 1170401461. The next prime is 1170401537. The reversal of 1170401521 is 1251040711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 708624400 + 461777121 = 26620^2 + 21489^2 .

It is a cyclic number.

It is not a de Polignac number, because 1170401521 - 2⁹ = 1170401009 is a prime.

It is a super-2 number, since 2×1170401521² = 2739679440718226882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1170401492 and 1170401501.

It is not a weakly prime, because it can be changed into another prime (1170401591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585200760 + 585200761.

It is an arithmetic number, because the mean of its divisors is an integer number (585200761).

Almost surely, 2^1170401521 is an apocalyptic number.

It is an amenable number.

1170401521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1170401521 is an equidigital number, since it uses as much as digits as its factorization.

1170401521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 1170401521 is about 34211.1315363874. The cubic root of 1170401521 is about 1053.8487688495.

The spelling of 1170401521 in words is "one billion, one hundred seventy million, four hundred one thousand, five hundred twenty-one".