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2020202551 = 47103417311
BaseRepresentation
bin111100001101001…
…1101100000110111
312012210100220220201
41320122131200313
513114132440201
6532243541331
7101030303233
oct17032354067
95183326821
102020202551
11947396094
1248468a847
132626cba33
141524375c3
15bc553801
hex7869d837

2020202551 has 8 divisors (see below), whose sum is σ = 2083221504. Its totient is φ = 1958018520.

The previous prime is 2020202521. The next prime is 2020202557. The reversal of 2020202551 is 1552020202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2020202551 - 25 = 2020202519 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 (2020202557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203815 + ... + 213496.

It is an arithmetic number, because the mean of its divisors is an integer number (260402688).

Almost surely, 22020202551 is an apocalyptic number.

2020202551 is a deficient number, since it is larger than the sum of its proper divisors (63018953).

2020202551 is a wasteful number, since it uses less digits than its factorization.

2020202551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417461.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 2020202551 is about 44946.6634023038. The cubic root of 2020202551 is about 1264.1491152844.

Adding to 2020202551 its reverse (1552020202), we get a palindrome (3572222753).

The spelling of 2020202551 in words is "two billion, twenty million, two hundred two thousand, five hundred fifty-one".

Divisors: 1 47 103 4841 417311 19613617 42983033 2020202551