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55102532653 = 77871790379
BaseRepresentation
bin110011010100010111…
…011110110000101101
312021020012010200112201
4303110113132300231
51400322222021103
641151434301501
73660330541150
oct632427366055
9167205120481
1055102532653
1121406a41393
12a819887891
135271c1ab0c
14294a281c97
15167780151d
hexcd45dec2d

55102532653 has 4 divisors (see below), whose sum is σ = 62974323040. Its totient is φ = 47230742268.

The previous prime is 55102532623. The next prime is 55102532677. The reversal of 55102532653 is 35623520155.

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: 35623520155 = 57124704031.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-55102532653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55102532603) 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, 3935895183 + ... + 3935895196.

It is an arithmetic number, because the mean of its divisors is an integer number (15743580760).

Almost surely, 255102532653 is an apocalyptic number.

It is an amenable number.

55102532653 is a deficient number, since it is larger than the sum of its proper divisors (7871790387).

55102532653 is an equidigital number, since it uses as much as digits as its factorization.

55102532653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7871790386.

The product of its (nonzero) digits is 135000, while the sum is 37.

The spelling of 55102532653 in words is "fifty-five billion, one hundred two million, five hundred thirty-two thousand, six hundred fifty-three".

Divisors: 1 7 7871790379 55102532653