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5019921 = 33185923
BaseRepresentation
bin10011001001100100010001
3100110001001000
4103021210101
52241114141
6255332213
760445224
oct23114421
910401030
105019921
1129195a5
121821069
131069b8a
149495bb
156925b6
hex4c9911

5019921 has 8 divisors (see below), whose sum is σ = 7436960. Its totient is φ = 3346596.

The previous prime is 5019919. The next prime is 5019943. The reversal of 5019921 is 1299105.

It is a happy number.

It is not a de Polignac number, because 5019921 - 21 = 5019919 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 185923 = 5019921 / (5 + 0 + 1 + 9 + 9 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5019961) 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, 92935 + ... + 92988.

It is an arithmetic number, because the mean of its divisors is an integer number (929620).

Almost surely, 25019921 is an apocalyptic number.

It is an amenable number.

5019921 is a deficient number, since it is larger than the sum of its proper divisors (2417039).

5019921 is a wasteful number, since it uses less digits than its factorization.

5019921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185932 (or 185926 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 5019921 is about 2240.5180204587. The cubic root of 5019921 is about 171.2243899401.

The spelling of 5019921 in words is "five million, nineteen thousand, nine hundred twenty-one".

Divisors: 1 3 9 27 185923 557769 1673307 5019921