51078093 has 24 divisors (see below), whose sum is σ = 76901664. Its totient is φ = 30111840.

The previous prime is 51078067. The next prime is 51078103. The reversal of 51078093 is 39087015.

It is not a de Polignac number, because 51078093 - 2²⁰ = 50029517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51078043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11530 + ... + 15332.

It is an arithmetic number, because the mean of its divisors is an integer number (3204236).

Almost surely, 2^51078093 is an apocalyptic number.

It is an amenable number.

51078093 is a deficient number, since it is larger than the sum of its proper divisors (25823571).

51078093 is a wasteful number, since it uses less digits than its factorization.

51078093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3865 (or 3854 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 51078093 is about 7146.8939407270. The cubic root of 51078093 is about 371.0321630149.

The spelling of 51078093 in words is "fifty-one million, seventy-eight thousand, ninety-three".