51259894 has 8 divisors (see below), whose sum is σ = 87874128. Its totient is φ = 21968520.

The previous prime is 51259883. The next prime is 51259903. The reversal of 51259894 is 49895215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51259894.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1830697 + ... + 1830724.

It is an arithmetic number, because the mean of its divisors is an integer number (10984266).

Almost surely, 2^51259894 is an apocalyptic number.

51259894 is a deficient number, since it is larger than the sum of its proper divisors (36614234).

51259894 is a wasteful number, since it uses less digits than its factorization.

51259894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661430.

The product of its digits is 129600, while the sum is 43.

The square root of 51259894 is about 7159.6015252247. The cubic root of 51259894 is about 371.4718436624.

It can be divided in two parts, 512 and 59894, that added together give a palindrome (60406).

The spelling of 51259894 in words is "fifty-one million, two hundred fifty-nine thousand, eight hundred ninety-four".