51403873 has 24 divisors (see below), whose sum is σ = 58375296. Its totient is φ = 45144000.

The previous prime is 51403871. The next prime is 51403897. The reversal of 51403873 is 37830415.

It is not a de Polignac number, because 51403873 - 2¹ = 51403871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51403871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 340348 + ... + 340498.

It is an arithmetic number, because the mean of its divisors is an integer number (2432304).

Almost surely, 2^51403873 is an apocalyptic number.

It is an amenable number.

51403873 is a deficient number, since it is larger than the sum of its proper divisors (6971423).

51403873 is a wasteful number, since it uses less digits than its factorization.

51403873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 51403873 is about 7169.6494335497. The cubic root of 51403873 is about 371.8193157496.

The spelling of 51403873 in words is "fifty-one million, four hundred three thousand, eight hundred seventy-three".