51211452 has 48 divisors (see below), whose sum is σ = 124353152. Its totient is φ = 16390080.

The previous prime is 51211451. The next prime is 51211481. The reversal of 51211452 is 25411215.

It is a super-2 number, since 2×51211452² = 5245225631896608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51211451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30663 + ... + 32289.

Almost surely, 2^51211452 is an apocalyptic number.

It is an amenable number.

51211452 is an abundant number, since it is smaller than the sum of its proper divisors (73141700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51211452 is a wasteful number, since it uses less digits than its factorization.

51211452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738 (or 1736 counting only the distinct ones).

The product of its digits is 400, while the sum is 21.

The square root of 51211452 is about 7156.2177160844. The cubic root of 51211452 is about 371.3547897685.

Adding to 51211452 its reverse (25411215), we get a palindrome (76622667).

The spelling of 51211452 in words is "fifty-one million, two hundred eleven thousand, four hundred fifty-two".