53921047 has 2 divisors, whose sum is σ = 53921048. Its totient is φ = 53921046.

The previous prime is 53921017. The next prime is 53921051. The reversal of 53921047 is 74012935.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53921047 - 2¹¹ = 53918999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53921017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26960523 + 26960524.

It is an arithmetic number, because the mean of its divisors is an integer number (26960524).

Almost surely, 2^53921047 is an apocalyptic number.

53921047 is a deficient number, since it is larger than the sum of its proper divisors (1).

53921047 is an equidigital number, since it uses as much as digits as its factorization.

53921047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 53921047 is about 7343.0951920835. The cubic root of 53921047 is about 377.7920129936.

The spelling of 53921047 in words is "fifty-three million, nine hundred twenty-one thousand, forty-seven".