51403297 has 8 divisors (see below), whose sum is σ = 56996352. Its totient is φ = 45963600.

The previous prime is 51403277. The next prime is 51403309. The reversal of 51403297 is 79230415.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51403297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51403207) 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, 37633 + ... + 38974.

It is an arithmetic number, because the mean of its divisors is an integer number (7124544).

Almost surely, 2^51403297 is an apocalyptic number.

It is an amenable number.

51403297 is a deficient number, since it is larger than the sum of its proper divisors (5593055).

51403297 is a wasteful number, since it uses less digits than its factorization.

51403297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76679.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 51403297 is about 7169.6092641092. The cubic root of 51403297 is about 371.8179269520.

The spelling of 51403297 in words is "fifty-one million, four hundred three thousand, two hundred ninety-seven".