51504741 has 20 divisors (see below), whose sum is σ = 77467104. Its totient is φ = 34101000.

The previous prime is 51504731. The next prime is 51504743. The reversal of 51504741 is 14740515.

It is a happy number.

51504741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51504741 - 2¹⁷ = 51373669 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51504743) 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 19 ways as a sum of consecutive naturals, for example, 10126 + ... + 14336.

Almost surely, 2^51504741 is an apocalyptic number.

It is an amenable number.

51504741 is a deficient number, since it is larger than the sum of its proper divisors (25962363).

51504741 is a wasteful number, since it uses less digits than its factorization.

51504741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4374 (or 4365 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 51504741 is about 7176.6803607239. The cubic root of 51504741 is about 372.0623594731.

The spelling of 51504741 in words is "fifty-one million, five hundred four thousand, seven hundred forty-one".