51420046 has 16 divisors (see below), whose sum is σ = 78576480. Its totient is φ = 25231360.

The previous prime is 51420037. The next prime is 51420079. The reversal of 51420046 is 64002415.

It is a super-2 number, since 2×51420046² = 5288042261284232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51419999 and 51420026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35790 + ... + 37198.

It is an arithmetic number, because the mean of its divisors is an integer number (4911030).

Almost surely, 2^51420046 is an apocalyptic number.

51420046 is a deficient number, since it is larger than the sum of its proper divisors (27156434).

51420046 is a wasteful number, since it uses less digits than its factorization.

51420046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 51420046 is about 7170.7772242624. Note that the first 3 decimals coincide. The cubic root of 51420046 is about 371.8583063476.

The spelling of 51420046 in words is "fifty-one million, four hundred twenty thousand, forty-six".