51423208 has 16 divisors (see below), whose sum is σ = 96518880. Its totient is φ = 25684848.

The previous prime is 51423179. The next prime is 51423209. The reversal of 51423208 is 80232415.

It is a super-2 number, since 2×51423208² = 5288692642022528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51423209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6541 + ... + 12067.

It is an arithmetic number, because the mean of its divisors is an integer number (6032430).

Almost surely, 2^51423208 is an apocalyptic number.

It is an amenable number.

51423208 is a deficient number, since it is larger than the sum of its proper divisors (45095672).

51423208 is a wasteful number, since it uses less digits than its factorization.

51423208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6696 (or 6692 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 51423208 is about 7170.9976990653. The cubic root of 51423208 is about 371.8659284843.

The spelling of 51423208 in words is "fifty-one million, four hundred twenty-three thousand, two hundred eight".