15880061 has 2 divisors, whose sum is σ = 15880062. Its totient is φ = 15880060.

The previous prime is 15880043. The next prime is 15880087. The reversal of 15880061 is 16008851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10956100 + 4923961 = 3310^2 + 2219^2 .

It is a cyclic number.

It is not a de Polignac number, because 15880061 - 2²² = 11685757 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15880021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7940030 + 7940031.

It is an arithmetic number, because the mean of its divisors is an integer number (7940031).

Almost surely, 2^15880061 is an apocalyptic number.

It is an amenable number.

15880061 is a deficient number, since it is larger than the sum of its proper divisors (1).

15880061 is an equidigital number, since it uses as much as digits as its factorization.

15880061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 15880061 is about 3984.9794227825. The cubic root of 15880061 is about 251.3529897984.

The spelling of 15880061 in words is "fifteen million, eight hundred eighty thousand, sixty-one".