51349357 has 4 divisors (see below), whose sum is σ = 51573820. Its totient is φ = 51124896.

The previous prime is 51349349. The next prime is 51349369. The reversal of 51349357 is 75394315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24940036 + 26409321 = 4994^2 + 5139^2 .

It is a cyclic number.

It is not a de Polignac number, because 51349357 - 2³ = 51349349 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 (51349307) 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, 111888 + ... + 112345.

It is an arithmetic number, because the mean of its divisors is an integer number (12893455).

Almost surely, 2^51349357 is an apocalyptic number.

It is an amenable number.

51349357 is a deficient number, since it is larger than the sum of its proper divisors (224463).

51349357 is a wasteful number, since it uses less digits than its factorization.

51349357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224462.

The product of its digits is 56700, while the sum is 37.

The square root of 51349357 is about 7165.8465654799. The cubic root of 51349357 is about 371.6878258402.

The spelling of 51349357 in words is "fifty-one million, three hundred forty-nine thousand, three hundred fifty-seven".