1521458131 has 2 divisors, whose sum is σ = 1521458132. Its totient is φ = 1521458130.

The previous prime is 1521458101. The next prime is 1521458149. The reversal of 1521458131 is 1318541251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1521458131 - 2²⁷ = 1387240403 is a prime.

It is a super-2 number, since 2×1521458131² = 4629669688772026322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1521458093 and 1521458102.

It is not a weakly prime, because it can be changed into another prime (1521458101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760729065 + 760729066.

It is an arithmetic number, because the mean of its divisors is an integer number (760729066).

Almost surely, 2^1521458131 is an apocalyptic number.

1521458131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521458131 is an equidigital number, since it uses as much as digits as its factorization.

1521458131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 31.

The square root of 1521458131 is about 39005.8730321474. The cubic root of 1521458131 is about 1150.1469581571.

Adding to 1521458131 its reverse (1318541251), we get a palindrome (2839999382).

The spelling of 1521458131 in words is "one billion, five hundred twenty-one million, four hundred fifty-eight thousand, one hundred thirty-one".