51501193 has 4 divisors (see below), whose sum is σ = 51521920. Its totient is φ = 51480468.

The previous prime is 51501179. The next prime is 51501221. The reversal of 51501193 is 39110515.

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 51501193 - 2⁹ = 51500681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51501103) 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, 6033 + ... + 11806.

It is an arithmetic number, because the mean of its divisors is an integer number (12880480).

Almost surely, 2^51501193 is an apocalyptic number.

It is an amenable number.

51501193 is a deficient number, since it is larger than the sum of its proper divisors (20727).

51501193 is a wasteful number, since it uses less digits than its factorization.

51501193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20726.

The product of its (nonzero) digits is 675, while the sum is 25.

The square root of 51501193 is about 7176.4331669709. The cubic root of 51501193 is about 372.0538158740.

The spelling of 51501193 in words is "fifty-one million, five hundred one thousand, one hundred ninety-three".