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53210121401 = 187928318319
BaseRepresentation
bin110001100011100100…
…100000010010111001
312002100022020020100002
4301203210200102321
51332433242341101
640235553322345
73562411366163
oct614344402271
9162308206302
1053210121401
11206257a9848
12a38bb663b5
13502cb43448
14280abd1933
1515b65e1d6b
hexc639204b9

53210121401 has 4 divisors (see below), whose sum is σ = 53238441600. Its totient is φ = 53181801204.

The previous prime is 53210121373. The next prime is 53210121407. The reversal of 53210121401 is 10412101235.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10412101235 = 52082420247.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-53210121401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53210121407) 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, 14157281 + ... + 14161038.

It is an arithmetic number, because the mean of its divisors is an integer number (13309610400).

Almost surely, 253210121401 is an apocalyptic number.

It is an amenable number.

53210121401 is a deficient number, since it is larger than the sum of its proper divisors (28320199).

53210121401 is a wasteful number, since it uses less digits than its factorization.

53210121401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28320198.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 53210121401 its reverse (10412101235), we get a palindrome (63622222636).

The spelling of 53210121401 in words is "fifty-three billion, two hundred ten million, one hundred twenty-one thousand, four hundred one".

Divisors: 1 1879 28318319 53210121401