51202845 has 24 divisors (see below), whose sum is σ = 89621376. Its totient is φ = 27040608.

The previous prime is 51202843. The next prime is 51202847. The reversal of 51202845 is 54820215.

It is a happy number.

51202845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51202843) and next prime (51202847).

It is not a de Polignac number, because 51202845 - 2¹ = 51202843 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51202843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 889 + ... + 10158.

It is an arithmetic number, because the mean of its divisors is an integer number (3734224).

Almost surely, 2^51202845 is an apocalyptic number.

It is an amenable number.

51202845 is a deficient number, since it is larger than the sum of its proper divisors (38418531).

51202845 is a wasteful number, since it uses less digits than its factorization.

51202845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11161 (or 11158 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 51202845 is about 7155.6163256564. The cubic root of 51202845 is about 371.3339843326. Note that the first 3 decimals are identical.

The spelling of 51202845 in words is "fifty-one million, two hundred two thousand, eight hundred forty-five".