51262501 has 8 divisors (see below), whose sum is σ = 53643384. Its totient is φ = 48934080.

The previous prime is 51262489. The next prime is 51262511. The reversal of 51262501 is 10526215.

It can be written as a sum of positive squares in 4 ways, for example, as 28366276 + 22896225 = 5326^2 + 4785^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51262501 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 (51262511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11110 + ... + 15031.

It is an arithmetic number, because the mean of its divisors is an integer number (6705423).

Almost surely, 2^51262501 is an apocalyptic number.

It is an amenable number.

51262501 is a deficient number, since it is larger than the sum of its proper divisors (2380883).

51262501 is a wasteful number, since it uses less digits than its factorization.

51262501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26231.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 51262501 is about 7159.7835861149. The cubic root of 51262501 is about 371.4781410527.

Adding to 51262501 its reverse (10526215), we get a palindrome (61788716).

The spelling of 51262501 in words is "fifty-one million, two hundred sixty-two thousand, five hundred one".