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55215159 = 3192933403
BaseRepresentation
bin1101001010100…
…0010000110111
310211220012221220
43102220100313
5103113341114
65251241423
71240215066
oct322502067
9124805856
1055215159
1129192a6a
12165a9273
13b5930bc
1474941dd
154caa0a9
hex34a8437

55215159 has 16 divisors (see below), whose sum is σ = 80169600. Its totient is φ = 33669216.

The previous prime is 55215119. The next prime is 55215161. The reversal of 55215159 is 95151255.

It is not a de Polignac number, because 55215159 - 211 = 55213111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55215119) 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, 15049 + ... + 18354.

It is an arithmetic number, because the mean of its divisors is an integer number (5010600).

Almost surely, 255215159 is an apocalyptic number.

55215159 is a deficient number, since it is larger than the sum of its proper divisors (24954441).

55215159 is a wasteful number, since it uses less digits than its factorization.

55215159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33454.

The product of its digits is 11250, while the sum is 33.

The square root of 55215159 is about 7430.6903447795. The cubic root of 55215159 is about 380.7905035198.

The spelling of 55215159 in words is "fifty-five million, two hundred fifteen thousand, one hundred fifty-nine".

Divisors: 1 3 19 29 57 87 551 1653 33403 100209 634657 968687 1903971 2906061 18405053 55215159