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52072413 = 3971271409
BaseRepresentation
bin1100011010100…
…0111111011101
310121222112220220
43012220333131
5101312304123
65100031553
71201415421
oct306507735
9117875826
1052072413
1127436858
12155325b9
13aa327a3
146cb6b81
154888ce3
hex31a8fdd

52072413 has 16 divisors (see below), whose sum is σ = 70748160. Its totient is φ = 34062336.

The previous prime is 52072409. The next prime is 52072417. The reversal of 52072413 is 31427025.

It is an interprime number because it is at equal distance from previous prime (52072409) and next prime (52072417).

It is not a de Polignac number, because 52072413 - 22 = 52072409 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52072417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36253 + ... + 37661.

It is an arithmetic number, because the mean of its divisors is an integer number (4421760).

Almost surely, 252072413 is an apocalyptic number.

It is an amenable number.

52072413 is a deficient number, since it is larger than the sum of its proper divisors (18675747).

52072413 is a wasteful number, since it uses less digits than its factorization.

52072413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 52072413 is about 7216.1217423211. The cubic root of 52072413 is about 373.4242932241.

Adding to 52072413 its reverse (31427025), we get a palindrome (83499438).

The spelling of 52072413 in words is "fifty-two million, seventy-two thousand, four hundred thirteen".

Divisors: 1 3 97 127 291 381 1409 4227 12319 36957 136673 178943 410019 536829 17357471 52072413