51594420 has 48 divisors (see below), whose sum is σ = 144986688. Its totient is φ = 13708800.

The previous prime is 51594419. The next prime is 51594421. The reversal of 51594420 is 2449515.

It is an interprime number because it is at equal distance from previous prime (51594419) and next prime (51594421).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51594421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17020 + ... + 19820.

It is an arithmetic number, because the mean of its divisors is an integer number (3020556).

Almost surely, 2^51594420 is an apocalyptic number.

It is an amenable number.

51594420 is an abundant number, since it is smaller than the sum of its proper divisors (93392268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51594420 is a wasteful number, since it uses less digits than its factorization.

51594420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3120 (or 3118 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 51594420 is about 7182.9255878089. The cubic root of 51594420 is about 372.2781767156.

The spelling of 51594420 in words is "fifty-one million, five hundred ninety-four thousand, four hundred twenty".