51337693 has 4 divisors (see below), whose sum is σ = 56004768. Its totient is φ = 46670620.

The previous prime is 51337691. The next prime is 51337697. The reversal of 51337693 is 39673315.

It is a happy number.

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 51337693 - 2¹ = 51337691 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51337691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2333521 + ... + 2333542.

It is an arithmetic number, because the mean of its divisors is an integer number (14001192).

Almost surely, 2^51337693 is an apocalyptic number.

It is an amenable number.

51337693 is a deficient number, since it is larger than the sum of its proper divisors (4667075).

51337693 is a wasteful number, since it uses less digits than its factorization.

51337693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4667074.

The product of its digits is 51030, while the sum is 37.

The square root of 51337693 is about 7165.0326586834. The cubic root of 51337693 is about 371.6596807614.

The spelling of 51337693 in words is "fifty-one million, three hundred thirty-seven thousand, six hundred ninety-three".