162540047 has 2 divisors, whose sum is σ = 162540048. Its totient is φ = 162540046.

The previous prime is 162540019. The next prime is 162540071. The reversal of 162540047 is 740045261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 162540047 - 2⁸ = 162539791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162540097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81270023 + 81270024.

It is an arithmetic number, because the mean of its divisors is an integer number (81270024).

Almost surely, 2^162540047 is an apocalyptic number.

162540047 is a deficient number, since it is larger than the sum of its proper divisors (1).

162540047 is an equidigital number, since it uses as much as digits as its factorization.

162540047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 162540047 is about 12749.1194597902. The cubic root of 162540047 is about 545.7412655519.

The spelling of 162540047 in words is "one hundred sixty-two million, five hundred forty thousand, forty-seven".