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52990997472 = 2533731631097
BaseRepresentation
bin110001010110100000…
…100111001111100000
312001210000220120211000
4301112200213033200
51332011143404342
640202124552000
73554111022000
oct612640471740
9161700816730
1052990997472
1120523044796
12a32a6b2600
134cc662170a
1427c9a72000
1515a225b44c
hexc568273e0

52990997472 has 384 divisors, whose sum is σ = 181512576000. Its totient is φ = 15033682944.

The previous prime is 52990997447. The next prime is 52990997509. The reversal of 52990997472 is 27479909925.

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 63 ways as a sum of consecutive naturals, for example, 48304828 + ... + 48305924.

It is an arithmetic number, because the mean of its divisors is an integer number (472689000).

Almost surely, 252990997472 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 52990997472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90756288000).

52990997472 is an abundant number, since it is smaller than the sum of its proper divisors (128521578528).

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

52990997472 is a wasteful number, since it uses less digits than its factorization.

52990997472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300 (or 1272 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 63.

The spelling of 52990997472 in words is "fifty-two billion, nine hundred ninety million, nine hundred ninety-seven thousand, four hundred seventy-two".