51424545 has 16 divisors (see below), whose sum is σ = 86610240. Its totient is φ = 25982784.

The previous prime is 51424543. The next prime is 51424553. The reversal of 51424545 is 54542415.

It is not a de Polignac number, because 51424545 - 2¹ = 51424543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51424543) 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, 89934 + ... + 90503.

It is an arithmetic number, because the mean of its divisors is an integer number (5413140).

Almost surely, 2^51424545 is an apocalyptic number.

It is an amenable number.

51424545 is a deficient number, since it is larger than the sum of its proper divisors (35185695).

51424545 is a wasteful number, since it uses less digits than its factorization.

51424545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180464.

The product of its digits is 16000, while the sum is 30.

The square root of 51424545 is about 7171.0909211918. The cubic root of 51424545 is about 371.8691512862.

The spelling of 51424545 in words is "fifty-one million, four hundred twenty-four thousand, five hundred forty-five".