53487331 has 2 divisors, whose sum is σ = 53487332. Its totient is φ = 53487330.

The previous prime is 53487289. The next prime is 53487341. The reversal of 53487331 is 13378435.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53487331 - 2⁹ = 53486819 is a prime.

It is a super-2 number, since 2×53487331² = 5721789155007122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53487341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26743665 + 26743666.

It is an arithmetic number, because the mean of its divisors is an integer number (26743666).

Almost surely, 2^53487331 is an apocalyptic number.

53487331 is a deficient number, since it is larger than the sum of its proper divisors (1).

53487331 is an equidigital number, since it uses as much as digits as its factorization.

53487331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 34.

The square root of 53487331 is about 7313.5033328768. The cubic root of 53487331 is about 376.7763567904.

The spelling of 53487331 in words is "fifty-three million, four hundred eighty-seven thousand, three hundred thirty-one".