51022510450 has 12 divisors (see below), whose sum is σ = 94901869530. Its totient is φ = 20409004160.

The previous prime is 51022510447. The next prime is 51022510457. The reversal of 51022510450 is 5401522015.

It can be written as a sum of positive squares in 3 ways, for example, as 31904747161 + 19117763289 = 178619^2 + 138267^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (51022510457) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 510225055 + ... + 510225154.

Almost surely, 2^51022510450 is an apocalyptic number.

51022510450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51022510450 is a deficient number, since it is larger than the sum of its proper divisors (43879359080).

51022510450 is a wasteful number, since it uses less digits than its factorization.

51022510450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020450221 (or 1020450216 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The spelling of 51022510450 in words is "fifty-one billion, twenty-two million, five hundred ten thousand, four hundred fifty".