51403849 has 8 divisors (see below), whose sum is σ = 59329728. Its totient is φ = 43623600.

The previous prime is 51403831. The next prime is 51403871. The reversal of 51403849 is 94830415.

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 51403849 - 2¹⁵ = 51371081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51403829) 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, 35647 + ... + 37060.

It is an arithmetic number, because the mean of its divisors is an integer number (7416216).

Almost surely, 2^51403849 is an apocalyptic number.

It is an amenable number.

51403849 is a deficient number, since it is larger than the sum of its proper divisors (7925879).

51403849 is a wasteful number, since it uses less digits than its factorization.

51403849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72815.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 51403849 is about 7169.6477598275. The cubic root of 51403849 is about 371.8192578832.

The spelling of 51403849 in words is "fifty-one million, four hundred three thousand, eight hundred forty-nine".