51754420 has 24 divisors (see below), whose sum is σ = 109764648. Its totient is φ = 20496000.

The previous prime is 51754397. The next prime is 51754429. The reversal of 51754420 is 2445715.

It can be written as a sum of positive squares in 4 ways, for example, as 9400356 + 42354064 = 3066^2 + 6508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51754429) 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, 10791 + ... + 14830.

It is an arithmetic number, because the mean of its divisors is an integer number (4573527).

Almost surely, 2^51754420 is an apocalyptic number.

It is an amenable number.

51754420 is an abundant number, since it is smaller than the sum of its proper divisors (58010228).

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

51754420 is a wasteful number, since it uses less digits than its factorization.

51754420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25731 (or 25729 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 51754420 is about 7194.0544896463. The cubic root of 51754420 is about 372.6626048643.

The spelling of 51754420 in words is "fifty-one million, seven hundred fifty-four thousand, four hundred twenty".