51623212 has 6 divisors (see below), whose sum is σ = 90340628. Its totient is φ = 25811604.

The previous prime is 51623197. The next prime is 51623227. The reversal of 51623212 is 21232615.

51623212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51623197) and next prime (51623227).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6452898 + ... + 6452905.

Almost surely, 2^51623212 is an apocalyptic number.

It is an amenable number.

51623212 is a deficient number, since it is larger than the sum of its proper divisors (38717416).

51623212 is a wasteful number, since it uses less digits than its factorization.

51623212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12905807 (or 12905805 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 51623212 is about 7184.9295055693. The cubic root of 51623212 is about 372.3474131437.

Adding to 51623212 its reverse (21232615), we get a palindrome (72855827).

The spelling of 51623212 in words is "fifty-one million, six hundred twenty-three thousand, two hundred twelve".