53291947 has 2 divisors, whose sum is σ = 53291948. Its totient is φ = 53291946.

The previous prime is 53291933. The next prime is 53291963. The reversal of 53291947 is 74919235.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53291947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53291047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26645973 + 26645974.

It is an arithmetic number, because the mean of its divisors is an integer number (26645974).

Almost surely, 2^53291947 is an apocalyptic number.

53291947 is a deficient number, since it is larger than the sum of its proper divisors (1).

53291947 is an equidigital number, since it uses as much as digits as its factorization.

53291947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 40.

The square root of 53291947 is about 7300.1333549463. The cubic root of 53291947 is about 376.3170212797.

The spelling of 53291947 in words is "fifty-three million, two hundred ninety-one thousand, nine hundred forty-seven".