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2142552551 = 17186167723
BaseRepresentation
bin111111110110100…
…1100000111100111
312112022120221120012
41333231030013213
513341443140201
6552334200435
7104044252616
oct17755140747
95468527505
102142552551
119aa462497
124b965311b
13281b69499
141647a587d
15c81705bb
hex7fb4c1e7

2142552551 has 8 divisors (see below), whose sum is σ = 2269837584. Its totient is φ = 2015406720.

The previous prime is 2142552487. The next prime is 2142552563. The reversal of 2142552551 is 1552552412.

It is a happy number.

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 2142552551 - 26 = 2142552487 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 (2142555551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2225 + ... + 65498.

It is an arithmetic number, because the mean of its divisors is an integer number (283729698).

Almost surely, 22142552551 is an apocalyptic number.

2142552551 is a deficient number, since it is larger than the sum of its proper divisors (127285033).

2142552551 is a wasteful number, since it uses less digits than its factorization.

2142552551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69601.

The product of its digits is 20000, while the sum is 32.

The square root of 2142552551 is about 46287.7149036329. The cubic root of 2142552551 is about 1289.1709014512.

The spelling of 2142552551 in words is "two billion, one hundred forty-two million, five hundred fifty-two thousand, five hundred fifty-one".

Divisors: 1 17 1861 31637 67723 1151291 126032503 2142552551