5151961 has 4 divisors (see below), whose sum is σ = 5205172. Its totient is φ = 5098752.

The previous prime is 5151953. The next prime is 5151967. The reversal of 5151961 is 1691515.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2449225 + 2702736 = 1565^2 + 1644^2 .

It is a cyclic number.

It is not a de Polignac number, because 5151961 - 2³ = 5151953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5151967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26460 + ... + 26653.

It is an arithmetic number, because the mean of its divisors is an integer number (1301293).

Almost surely, 2^5151961 is an apocalyptic number.

It is an amenable number.

5151961 is a deficient number, since it is larger than the sum of its proper divisors (53211).

5151961 is an equidigital number, since it uses as much as digits as its factorization.

5151961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53210.

The product of its digits is 1350, while the sum is 28.

The square root of 5151961 is about 2269.7931623829. The cubic root of 5151961 is about 172.7126663633.

The spelling of 5151961 in words is "five million, one hundred fifty-one thousand, nine hundred sixty-one".