51228407 has 8 divisors (see below), whose sum is σ = 52063440. Its totient is φ = 50397120.

The previous prime is 51228391. The next prime is 51228409. The reversal of 51228407 is 70482215.

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 51228407 - 2⁴ = 51228391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51228407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51228409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41069 + ... + 42297.

It is an arithmetic number, because the mean of its divisors is an integer number (6507930).

Almost surely, 2^51228407 is an apocalyptic number.

51228407 is a deficient number, since it is larger than the sum of its proper divisors (835033).

51228407 is a wasteful number, since it uses less digits than its factorization.

51228407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 51228407 is about 7157.4022522141. The cubic root of 51228407 is about 371.3957677496.

The spelling of 51228407 in words is "fifty-one million, two hundred twenty-eight thousand, four hundred seven".