51267678 has 32 divisors (see below), whose sum is σ = 127837440. Its totient is φ = 13316160.

The previous prime is 51267673. The next prime is 51267779. The reversal of 51267678 is 87676215.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51267673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55023 + ... + 55946.

It is an arithmetic number, because the mean of its divisors is an integer number (3994920).

Almost surely, 2^51267678 is an apocalyptic number.

51267678 is an abundant number, since it is smaller than the sum of its proper divisors (76569762).

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

51267678 is a wasteful number, since it uses less digits than its factorization.

51267678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110992.

The product of its digits is 141120, while the sum is 42.

The square root of 51267678 is about 7160.1451102614. The cubic root of 51267678 is about 371.4906458243.

The spelling of 51267678 in words is "fifty-one million, two hundred sixty-seven thousand, six hundred seventy-eight".