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215052054 = 2375120287
BaseRepresentation
bin11001101000101…
…10111100010110
3112222122202221220
430310112330112
5420023131204
633201151210
75220624630
oct1464267426
9488582856
10215052054
11100433878
126002b506
1335727549
14207bda50
1513d2e1d9
hexcd16f16

215052054 has 16 divisors (see below), whose sum is σ = 491547648. Its totient is φ = 61443432.

The previous prime is 215052041. The next prime is 215052067. The reversal of 215052054 is 450250512.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (215052041) and next prime (215052067).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2560102 + ... + 2560185.

It is an arithmetic number, because the mean of its divisors is an integer number (30721728).

Almost surely, 2215052054 is an apocalyptic number.

215052054 is an abundant number, since it is smaller than the sum of its proper divisors (276495594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215052054 is a wasteful number, since it uses less digits than its factorization.

215052054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5120299.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 215052054 is about 14664.6532178569. The cubic root of 215052054 is about 599.1209850724.

The spelling of 215052054 in words is "two hundred fifteen million, fifty-two thousand, fifty-four".

Divisors: 1 2 3 6 7 14 21 42 5120287 10240574 15360861 30721722 35842009 71684018 107526027 215052054