51426787 has 4 divisors (see below), whose sum is σ = 54133480. Its totient is φ = 48720096.

The previous prime is 51426779. The next prime is 51426797. The reversal of 51426787 is 78762415.

51426787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51426787 - 2³ = 51426779 is a prime.

It is a super-2 number, since 2×51426787² = 5289428842286738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51426797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353318 + ... + 1353355.

It is an arithmetic number, because the mean of its divisors is an integer number (13533370).

Almost surely, 2^51426787 is an apocalyptic number.

51426787 is a deficient number, since it is larger than the sum of its proper divisors (2706693).

51426787 is a wasteful number, since it uses less digits than its factorization.

51426787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706692.

The product of its digits is 94080, while the sum is 40.

The square root of 51426787 is about 7171.2472415892. The cubic root of 51426787 is about 371.8745554405.

The spelling of 51426787 in words is "fifty-one million, four hundred twenty-six thousand, seven hundred eighty-seven".