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15243055 = 53048611
BaseRepresentation
bin111010001001…
…011100101111
31001200102112121
4322021130233
512400234210
61302413411
7243364252
oct72113457
931612477
1015243055
118671373
125131267
133209179
14204b099
1515116da
hexe8972f

15243055 has 4 divisors (see below), whose sum is σ = 18291672. Its totient is φ = 12194440.

The previous prime is 15243049. The next prime is 15243071. The reversal of 15243055 is 55034251.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 15243055 - 29 = 15242543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1524301 + ... + 1524310.

It is an arithmetic number, because the mean of its divisors is an integer number (4572918).

Almost surely, 215243055 is an apocalyptic number.

15243055 is a deficient number, since it is larger than the sum of its proper divisors (3048617).

15243055 is an equidigital number, since it uses as much as digits as its factorization.

15243055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3048616.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 15243055 is about 3904.2355205597. The cubic root of 15243055 is about 247.9461327247.

The spelling of 15243055 in words is "fifteen million, two hundred forty-three thousand, fifty-five".

Divisors: 1 5 3048611 15243055