16572091 has 2 divisors, whose sum is σ = 16572092. Its totient is φ = 16572090.

The previous prime is 16572019. The next prime is 16572107. The reversal of 16572091 is 19027561.

Together with previous prime (16572019) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16572091 - 2¹⁹ = 16047803 is a prime.

It is a super-2 number, since 2×16572091² = 549268400224562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16572791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8286045 + 8286046.

It is an arithmetic number, because the mean of its divisors is an integer number (8286046).

Almost surely, 2^16572091 is an apocalyptic number.

16572091 is a deficient number, since it is larger than the sum of its proper divisors (1).

16572091 is an equidigital number, since it uses as much as digits as its factorization.

16572091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 16572091 is about 4070.8833193792. The cubic root of 16572091 is about 254.9523991631.

The spelling of 16572091 in words is "sixteen million, five hundred seventy-two thousand, ninety-one".