51421466 has 16 divisors (see below), whose sum is σ = 80922240. Its totient is φ = 24472560.

The previous prime is 51421463. The next prime is 51421483. The reversal of 51421466 is 66412415.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (51421463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2126 + ... + 10361.

It is an arithmetic number, because the mean of its divisors is an integer number (5057640).

Almost surely, 2^51421466 is an apocalyptic number.

51421466 is a deficient number, since it is larger than the sum of its proper divisors (29500774).

51421466 is a wasteful number, since it uses less digits than its factorization.

51421466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12589.

The product of its digits is 5760, while the sum is 29.

The square root of 51421466 is about 7170.8762365558. The cubic root of 51421466 is about 371.8617293572.

The spelling of 51421466 in words is "fifty-one million, four hundred twenty-one thousand, four hundred sixty-six".