51242653 has 24 divisors (see below), whose sum is σ = 65116800. Its totient is φ = 39468000.

The previous prime is 51242651. The next prime is 51242663. The reversal of 51242653 is 35624215.

It is not a de Polignac number, because 51242653 - 2¹ = 51242651 is a prime.

It is a super-3 number, since 3×51242653³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51242651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85248 + ... + 85846.

It is an arithmetic number, because the mean of its divisors is an integer number (2713200).

Almost surely, 2^51242653 is an apocalyptic number.

It is an amenable number.

51242653 is a deficient number, since it is larger than the sum of its proper divisors (13874147).

51242653 is a wasteful number, since it uses less digits than its factorization.

51242653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729 (or 718 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 51242653 is about 7158.3973765082. The cubic root of 51242653 is about 371.4301914483.

Adding to 51242653 its reverse (35624215), we get a palindrome (86866868).

It can be divided in two parts, 5124 and 2653, that added together give a palindrome (7777).

The spelling of 51242653 in words is "fifty-one million, two hundred forty-two thousand, six hundred fifty-three".