51124845 has 8 divisors (see below), whose sum is σ = 81799776. Its totient is φ = 27266576.

The previous prime is 51124841. The next prime is 51124867. The reversal of 51124845 is 54842115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51124845 - 2² = 51124841 is a prime.

It is a super-2 number, since 2×51124845² = 5227499552548050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51124841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1704147 + ... + 1704176.

It is an arithmetic number, because the mean of its divisors is an integer number (10224972).

Almost surely, 2^51124845 is an apocalyptic number.

It is an amenable number.

51124845 is a deficient number, since it is larger than the sum of its proper divisors (30674931).

51124845 is a wasteful number, since it uses less digits than its factorization.

51124845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408331.

The product of its digits is 6400, while the sum is 30.

The square root of 51124845 is about 7150.1639841335. The cubic root of 51124845 is about 371.1453309435.

The spelling of 51124845 in words is "fifty-one million, one hundred twenty-four thousand, eight hundred forty-five".