5151989 has 2 divisors, whose sum is σ = 5151990. Its totient is φ = 5151988.

The previous prime is 5151967. The next prime is 5151997. The reversal of 5151989 is 9891515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3771364 + 1380625 = 1942^2 + 1175^2 .

It is a cyclic number.

It is not a de Polignac number, because 5151989 - 2¹² = 5147893 is a prime.

It is a super-2 number, since 2×5151989² = 53085981312242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5151919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2575994 + 2575995.

It is an arithmetic number, because the mean of its divisors is an integer number (2575995).

Almost surely, 2^5151989 is an apocalyptic number.

It is an amenable number.

5151989 is a deficient number, since it is larger than the sum of its proper divisors (1).

5151989 is an equidigital number, since it uses as much as digits as its factorization.

5151989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16200, while the sum is 38.

The square root of 5151989 is about 2269.7993303374. The cubic root of 5151989 is about 172.7129792504.

The spelling of 5151989 in words is "five million, one hundred fifty-one thousand, nine hundred eighty-nine".