51403208 has 32 divisors (see below), whose sum is σ = 104736000. Its totient is φ = 23561280.

The previous prime is 51403207. The next prime is 51403273. The reversal of 51403208 is 80230415.

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, 743 + ... + 10166.

It is an arithmetic number, because the mean of its divisors is an integer number (3273000).

Almost surely, 2^51403208 is an apocalyptic number.

It is an amenable number.

51403208 is an abundant number, since it is smaller than the sum of its proper divisors (53332792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51403208 is a wasteful number, since it uses less digits than its factorization.

51403208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10965 (or 10961 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 51403208 is about 7169.6030573526. The cubic root of 51403208 is about 371.8177123625.

The spelling of 51403208 in words is "fifty-one million, four hundred three thousand, two hundred eight".