53400547 has 2 divisors, whose sum is σ = 53400548. Its totient is φ = 53400546.

The previous prime is 53400499. The next prime is 53400563. The reversal of 53400547 is 74500435.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53400547 is a prime.

It is not a weakly prime, because it can be changed into another prime (53400847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26700273 + 26700274.

It is an arithmetic number, because the mean of its divisors is an integer number (26700274).

Almost surely, 2^53400547 is an apocalyptic number.

53400547 is a deficient number, since it is larger than the sum of its proper divisors (1).

53400547 is an equidigital number, since it uses as much as digits as its factorization.

53400547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 53400547 is about 7307.5677896274. The cubic root of 53400547 is about 376.5724713773.

The spelling of 53400547 in words is "fifty-three million, four hundred thousand, five hundred forty-seven".