5165551 has 2 divisors, whose sum is σ = 5165552. Its totient is φ = 5165550.

The previous prime is 5165543. The next prime is 5165557. The reversal of 5165551 is 1555615.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5165551 - 2³ = 5165543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5165557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2582775 + 2582776.

It is an arithmetic number, because the mean of its divisors is an integer number (2582776).

Almost surely, 2^5165551 is an apocalyptic number.

5165551 is a deficient number, since it is larger than the sum of its proper divisors (1).

5165551 is an equidigital number, since it uses as much as digits as its factorization.

5165551 is an odious number, because the sum of its binary digits is odd.

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

The square root of 5165551 is about 2272.7848556342. The cubic root of 5165551 is about 172.8643952776.

The spelling of 5165551 in words is "five million, one hundred sixty-five thousand, five hundred fifty-one".