51020551452 has 24 divisors (see below), whose sum is σ = 128205488656. Its totient is φ = 15698631168.

The previous prime is 51020551423. The next prime is 51020551457. The reversal of 51020551452 is 25415502015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51020551457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163527253 + ... + 163527564.

Almost surely, 2^51020551452 is an apocalyptic number.

51020551452 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51020551452 is an abundant number, since it is smaller than the sum of its proper divisors (77184937204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51020551452 is a wasteful number, since it uses less digits than its factorization.

51020551452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327054837 (or 327054835 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The spelling of 51020551452 in words is "fifty-one billion, twenty million, five hundred fifty-one thousand, four hundred fifty-two".