51407452 has 24 divisors (see below), whose sum is σ = 91488320. Its totient is φ = 25272000.

The previous prime is 51407449. The next prime is 51407501. The reversal of 51407452 is 25470415.

It is a super-2 number, since 2×51407452² = 5285452242264608, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51407452.

It is a congruent number.

It is an unprimeable number.

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, 68077 + ... + 68827.

Almost surely, 2^51407452 is an apocalyptic number.

It is an amenable number.

51407452 is a deficient number, since it is larger than the sum of its proper divisors (40080868).

51407452 is a wasteful number, since it uses less digits than its factorization.

51407452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021 (or 1019 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 51407452 is about 7169.8990229989. The cubic root of 51407452 is about 371.8279448688.

Adding to 51407452 its reverse (25470415), we get a palindrome (76877867).

The spelling of 51407452 in words is "fifty-one million, four hundred seven thousand, four hundred fifty-two".