51025220331 has 8 divisors (see below), whose sum is σ = 68050104720. Its totient is φ = 34008574752.

The previous prime is 51025220293. The next prime is 51025220357. The reversal of 51025220331 is 13302252015.

It is a happy number.

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

It is not a de Polignac number, because 51025220331 - 2¹⁰ = 51025219307 is a prime.

It is a super-2 number, since 2×51025220331² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51025220131) 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, 2045236 + ... + 2070033.

It is an arithmetic number, because the mean of its divisors is an integer number (8506263090).

Almost surely, 2^51025220331 is an apocalyptic number.

51025220331 is a deficient number, since it is larger than the sum of its proper divisors (17024884389).

51025220331 is a wasteful number, since it uses less digits than its factorization.

51025220331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4119405.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 51025220331 its reverse (13302252015), we get a palindrome (64327472346).

The spelling of 51025220331 in words is "fifty-one billion, twenty-five million, two hundred twenty thousand, three hundred thirty-one".