51402412 has 12 divisors (see below), whose sum is σ = 90007960. Its totient is φ = 25685856.

The previous prime is 51402409. The next prime is 51402437. The reversal of 51402412 is 21420415.

It is a self number, because there is not a number n which added to its sum of digits gives 51402412.

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 3 ways as a sum of consecutive naturals, for example, 7264 + ... + 12472.

Almost surely, 2^51402412 is an apocalyptic number.

It is an amenable number.

51402412 is a deficient number, since it is larger than the sum of its proper divisors (38605548).

51402412 is a wasteful number, since it uses less digits than its factorization.

51402412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7680 (or 7678 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 51402412 is about 7169.5475449989. The cubic root of 51402412 is about 371.8157931021.

Adding to 51402412 its reverse (21420415), we get a palindrome (72822827).

The spelling of 51402412 in words is "fifty-one million, four hundred two thousand, four hundred twelve".