5051261 has 4 divisors (see below), whose sum is σ = 5348412. Its totient is φ = 4754112.

The previous prime is 5051257. The next prime is 5051269. The reversal of 5051261 is 1621505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1621505 = 5 ⋅324301.

It can be written as a sum of positive squares in 2 ways, for example, as 3728761 + 1322500 = 1931^2 + 1150^2 .

It is a cyclic number.

It is not a de Polignac number, because 5051261 - 2² = 5051257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5051269) 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, 148550 + ... + 148583.

It is an arithmetic number, because the mean of its divisors is an integer number (1337103).

Almost surely, 2^5051261 is an apocalyptic number.

It is an amenable number.

5051261 is a deficient number, since it is larger than the sum of its proper divisors (297151).

5051261 is a wasteful number, since it uses less digits than its factorization.

5051261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297150.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 5051261 is about 2247.5010567295. The cubic root of 5051261 is about 171.5799761285.

Adding to 5051261 its reverse (1621505), we get a palindrome (6672766).

The spelling of 5051261 in words is "five million, fifty-one thousand, two hundred sixty-one".