51504332450 has 24 divisors (see below), whose sum is σ = 96019341348. Its totient is φ = 20554145280.

The previous prime is 51504332431. The next prime is 51504332483. The reversal of 51504332450 is 5423340515.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 9091813201 + 42412519249 = 95351^2 + 205943^2 .

It is a super-2 number, since 2×51504332450² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1167827 + ... + 1211126.

Almost surely, 2^51504332450 is an apocalyptic number.

51504332450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51504332450 is a deficient number, since it is larger than the sum of its proper divisors (44515008898).

51504332450 is a wasteful number, since it uses less digits than its factorization.

51504332450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379398 (or 2379393 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 51504332450 its reverse (5423340515), we get a palindrome (56927672965).

The spelling of 51504332450 in words is "fifty-one billion, five hundred four million, three hundred thirty-two thousand, four hundred fifty".