1521161107 has 2 divisors, whose sum is σ = 1521161108. Its totient is φ = 1521161106.

The previous prime is 1521161093. The next prime is 1521161167. The reversal of 1521161107 is 7011611251.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1521161107 is a prime.

It is a super-2 number, since 2×1521161107² = 4627862226898930898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1521161167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760580553 + 760580554.

It is an arithmetic number, because the mean of its divisors is an integer number (760580554).

Almost surely, 2^1521161107 is an apocalyptic number.

1521161107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521161107 is an equidigital number, since it uses as much as digits as its factorization.

1521161107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 25.

The square root of 1521161107 is about 39002.0654196672. The cubic root of 1521161107 is about 1150.0721081439.

Adding to 1521161107 its reverse (7011611251), we get a palindrome (8532772358).

The spelling of 1521161107 in words is "one billion, five hundred twenty-one million, one hundred sixty-one thousand, one hundred seven".