51250073 has 4 divisors (see below), whose sum is σ = 58571520. Its totient is φ = 43928628.

The previous prime is 51250061. The next prime is 51250081. The reversal of 51250073 is 37005215.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51250073 - 2⁴ = 51250057 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51250013) 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 3 ways as a sum of consecutive naturals, for example, 3660713 + ... + 3660726.

It is an arithmetic number, because the mean of its divisors is an integer number (14642880).

Almost surely, 2^51250073 is an apocalyptic number.

It is an amenable number.

51250073 is a deficient number, since it is larger than the sum of its proper divisors (7321447).

51250073 is an equidigital number, since it uses as much as digits as its factorization.

51250073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7321446.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 51250073 is about 7158.9156301775. The cubic root of 51250073 is about 371.4481184345.

Adding to 51250073 its reverse (37005215), we get a palindrome (88255288).

The spelling of 51250073 in words is "fifty-one million, two hundred fifty thousand, seventy-three".