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52555757904720 = 24325771670321911
BaseRepresentation
bin10111111001100100101110…
…10001111110001101010000
320220002021121010112212100200
423330302113101332031100
523342033143010422340
6303435440515015200
714033012450236530
oct1374622721761520
9226067533485320
1052555757904720
1115822854236464
125a897a8b9a500
132342ca9a38135
14cd99d85db4c0
1561216887b330
hex2fcc9747e350

52555757904720 has 480 divisors, whose sum is σ = 204594900516864. Its totient is φ = 11841243724800.

The previous prime is 52555757904701. The next prime is 52555757904779. The reversal of 52555757904720 is 2740975755525.

52555757904720 is a `hidden beast` number, since 5 + 2 + 5 + 5 + 5 + 75 + 7 + 90 + 472 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2398590565 + ... + 2398612475.

Almost surely, 252555757904720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52555757904720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102297450258432).

52555757904720 is an abundant number, since it is smaller than the sum of its proper divisors (152039142612144).

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

52555757904720 is a wasteful number, since it uses less digits than its factorization.

52555757904720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28711 (or 28702 counting only the distinct ones).

The product of its (nonzero) digits is 154350000, while the sum is 63.

The spelling of 52555757904720 in words is "fifty-two trillion, five hundred fifty-five billion, seven hundred fifty-seven million, nine hundred four thousand, seven hundred twenty".