51339025949 has 8 divisors (see below), whose sum is σ = 53580042432. Its totient is φ = 49098749920.

The previous prime is 51339025937. The next prime is 51339025963. The reversal of 51339025949 is 94952093315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51339025949 is a prime.

It is a super-4 number, since 4×51339025949⁴ (a number of 44 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51339025897 and 51339025906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51339025999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41024 + ... + 323049.

It is an arithmetic number, because the mean of its divisors is an integer number (6697505304).

Almost surely, 2^51339025949 is an apocalyptic number.

It is an amenable number.

51339025949 is a deficient number, since it is larger than the sum of its proper divisors (2241016483).

51339025949 is a wasteful number, since it uses less digits than its factorization.

51339025949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370227.

The product of its (nonzero) digits is 1312200, while the sum is 50.

The spelling of 51339025949 in words is "fifty-one billion, three hundred thirty-nine million, twenty-five thousand, nine hundred forty-nine".