51894613 has 8 divisors (see below), whose sum is σ = 52485120. Its totient is φ = 51307200.

The previous prime is 51894611. The next prime is 51894631. The reversal of 51894613 is 31649815.

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

It is a cyclic number.

It is not a de Polignac number, because 51894613 - 2¹ = 51894611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51894611) 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, 50418 + ... + 51436.

It is an arithmetic number, because the mean of its divisors is an integer number (6560640).

Almost surely, 2^51894613 is an apocalyptic number.

It is an amenable number.

51894613 is a deficient number, since it is larger than the sum of its proper divisors (590507).

51894613 is a wasteful number, since it uses less digits than its factorization.

51894613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547.

The product of its digits is 25920, while the sum is 37.

The square root of 51894613 is about 7203.7915711103. The cubic root of 51894613 is about 372.9987924836.

The spelling of 51894613 in words is "fifty-one million, eight hundred ninety-four thousand, six hundred thirteen".