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220052551 = 2997137571
BaseRepresentation
bin11010001110110…
…11110001000111
3120100001211100111
431013123301013
5422313140201
633500253451
75311262425
oct1507336107
9510054314
10220052551
11103239814
1261841287
1336788614
1421322115
15144bab51
hexd1dbc47

220052551 has 16 divisors (see below), whose sum is σ = 232071840. Its totient is φ = 208373760.

The previous prime is 220052531. The next prime is 220052557. The reversal of 220052551 is 155250022.

It is a cyclic number.

It is not a de Polignac number, because 220052551 - 211 = 220050503 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 (220052557) 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, 385096 + ... + 385666.

It is an arithmetic number, because the mean of its divisors is an integer number (14504490).

Almost surely, 2220052551 is an apocalyptic number.

220052551 is a deficient number, since it is larger than the sum of its proper divisors (12019289).

220052551 is a wasteful number, since it uses less digits than its factorization.

220052551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 220052551 is about 14834.1683622642. The cubic root of 220052551 is about 603.7291365866.

The spelling of 220052551 in words is "two hundred twenty million, fifty-two thousand, five hundred fifty-one".

Divisors: 1 29 97 137 571 2813 3973 13289 16559 55387 78227 385381 1606223 2268583 7588019 220052551