15065551 has 2 divisors, whose sum is σ = 15065552. Its totient is φ = 15065550.

The previous prime is 15065543. The next prime is 15065569. The reversal of 15065551 is 15556051.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15065551 - 2³ = 15065543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15065251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7532775 + 7532776.

It is an arithmetic number, because the mean of its divisors is an integer number (7532776).

Almost surely, 2^15065551 is an apocalyptic number.

15065551 is a deficient number, since it is larger than the sum of its proper divisors (1).

15065551 is an equidigital number, since it uses as much as digits as its factorization.

15065551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 15065551 is about 3881.4367185361. The cubic root of 15065551 is about 246.9799357565.

The spelling of 15065551 in words is "fifteen million, sixty-five thousand, five hundred fifty-one".