51434145 has 48 divisors (see below), whose sum is σ = 102435840. Its totient is φ = 23386752.

The previous prime is 51434093. The next prime is 51434171. The reversal of 51434145 is 54143415.

It is a happy number.

51434145 is a `hidden beast` number, since 514 + 3 + 4 + 145 = 666.

It is not a de Polignac number, because 51434145 - 2¹⁵ = 51401377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 84432 + ... + 85038.

It is an arithmetic number, because the mean of its divisors is an integer number (2134080).

Almost surely, 2^51434145 is an apocalyptic number.

It is an amenable number.

51434145 is a deficient number, since it is larger than the sum of its proper divisors (51001695).

51434145 is a wasteful number, since it uses less digits than its factorization.

51434145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894 (or 891 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 51434145 is about 7171.7602441799. The cubic root of 51434145 is about 371.8922901831.

The spelling of 51434145 in words is "fifty-one million, four hundred thirty-four thousand, one hundred forty-five".