51493801 has 8 divisors (see below), whose sum is σ = 52290560. Its totient is φ = 50703408.

The previous prime is 51493789. The next prime is 51493807. The reversal of 51493801 is 10839415.

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 51493801 - 2²¹ = 49396649 is a prime.

It is a super-2 number, since 2×51493801² = 5303223082855202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51493807) 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, 16195 + ... + 19111.

It is an arithmetic number, because the mean of its divisors is an integer number (6536320).

Almost surely, 2^51493801 is an apocalyptic number.

It is an amenable number.

51493801 is a deficient number, since it is larger than the sum of its proper divisors (796759).

51493801 is a wasteful number, since it uses less digits than its factorization.

51493801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 51493801 is about 7175.9181294103. The cubic root of 51493801 is about 372.0360146463.

The spelling of 51493801 in words is "fifty-one million, four hundred ninety-three thousand, eight hundred one".