15790081 has 2 divisors, whose sum is σ = 15790082. Its totient is φ = 15790080.

The previous prime is 15790057. The next prime is 15790133. The reversal of 15790081 is 18009751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9241600 + 6548481 = 3040^2 + 2559^2 .

It is a cyclic number.

It is not a de Polignac number, because 15790081 - 2⁷ = 15789953 is a prime.

It is a super-2 number, since 2×15790081² = 498653315973122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15790381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7895040 + 7895041.

It is an arithmetic number, because the mean of its divisors is an integer number (7895041).

It is a Proth number, since it is equal to 3855 ⋅ 2¹² + 1 and 3855 < 2¹².

Almost surely, 2^15790081 is an apocalyptic number.

It is an amenable number.

15790081 is a deficient number, since it is larger than the sum of its proper divisors (1).

15790081 is an equidigital number, since it uses as much as digits as its factorization.

15790081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 15790081 is about 3973.6734893547. The cubic root of 15790081 is about 250.8773494301.

The spelling of 15790081 in words is "fifteen million, seven hundred ninety thousand, eighty-one".