51784492 has 6 divisors (see below), whose sum is σ = 90622868. Its totient is φ = 25892244.

The previous prime is 51784463. The next prime is 51784511. The reversal of 51784492 is 29448715.

It is a super-2 number, since 2×51784492² = 5363267223396128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6473058 + ... + 6473065.

Almost surely, 2^51784492 is an apocalyptic number.

It is an amenable number.

51784492 is a deficient number, since it is larger than the sum of its proper divisors (38838376).

51784492 is a wasteful number, since it uses less digits than its factorization.

51784492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12946127 (or 12946125 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 51784492 is about 7196.1442453581. The cubic root of 51784492 is about 372.7347696507.

The spelling of 51784492 in words is "fifty-one million, seven hundred eighty-four thousand, four hundred ninety-two".