16542797 has 2 divisors, whose sum is σ = 16542798. Its totient is φ = 16542796.

The previous prime is 16542793. The next prime is 16542817. The reversal of 16542797 is 79724561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16491721 + 51076 = 4061^2 + 226^2 .

It is a cyclic number.

It is not a de Polignac number, because 16542797 - 2² = 16542793 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16542793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8271398 + 8271399.

It is an arithmetic number, because the mean of its divisors is an integer number (8271399).

Almost surely, 2^16542797 is an apocalyptic number.

It is an amenable number.

16542797 is a deficient number, since it is larger than the sum of its proper divisors (1).

16542797 is an equidigital number, since it uses as much as digits as its factorization.

16542797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 105840, while the sum is 41.

The square root of 16542797 is about 4067.2837373363. The cubic root of 16542797 is about 254.8020865971.

The spelling of 16542797 in words is "sixteen million, five hundred forty-two thousand, seven hundred ninety-seven".