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52027381 = 77432483
BaseRepresentation
bin1100011001110…
…1111111110101
310121220021011001
43012131333311
5101304334011
65055043301
71201140220
oct306357765
9117807131
1052027381
1127405a3a
1215510531
13aa18143
146ca45b7
15487a7c1
hex319dff5

52027381 has 4 divisors (see below), whose sum is σ = 59459872. Its totient is φ = 44594892.

The previous prime is 52027379. The next prime is 52027387. The reversal of 52027381 is 18372025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52027381 - 21 = 52027379 is a prime.

It is a super-2 number, since 2×520273812 = 5413696747438322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52027387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3716235 + ... + 3716248.

It is an arithmetic number, because the mean of its divisors is an integer number (14864968).

Almost surely, 252027381 is an apocalyptic number.

It is an amenable number.

52027381 is a deficient number, since it is larger than the sum of its proper divisors (7432491).

52027381 is an equidigital number, since it uses as much as digits as its factorization.

52027381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7432490.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 52027381 is about 7213.0008318314. Note that the first 3 decimals coincide. The cubic root of 52027381 is about 373.3166169350.

The spelling of 52027381 in words is "fifty-two million, twenty-seven thousand, three hundred eighty-one".

Divisors: 1 7 7432483 52027381