51546212 has 6 divisors (see below), whose sum is σ = 90205878. Its totient is φ = 25773104.

The previous prime is 51546203. The next prime is 51546223. The reversal of 51546212 is 21264515.

It can be written as a sum of positive squares in only one way, i.e., 41267776 + 10278436 = 6424^2 + 3206^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6443273 + ... + 6443280.

It is an arithmetic number, because the mean of its divisors is an integer number (15034313).

Almost surely, 2^51546212 is an apocalyptic number.

It is an amenable number.

51546212 is a deficient number, since it is larger than the sum of its proper divisors (38659666).

51546212 is a wasteful number, since it uses less digits than its factorization.

51546212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12886557 (or 12886555 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 51546212 is about 7179.5690678480. The cubic root of 51546212 is about 372.1621927335.

The spelling of 51546212 in words is "fifty-one million, five hundred forty-six thousand, two hundred twelve".