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545491 = 2337641
BaseRepresentation
bin10000101001011010011
31000201021101
42011023103
5114423431
615405231
74431232
oct2051323
91021241
10545491
11342921
12223817
1316139b
14102b19
15ab961
hex852d3

545491 has 8 divisors (see below), whose sum is σ = 585504. Its totient is φ = 506880.

The previous prime is 545483. The next prime is 545497. The reversal of 545491 is 194545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 10-Lehmer number, since φ(545491) divides (545491-1)10.

It is a cyclic number.

It is not a de Polignac number, because 545491 - 23 = 545483 is a prime.

It is a pancake number, because a pancake can be divided into 545491 parts by 1044 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545497) 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, 531 + ... + 1171.

It is an arithmetic number, because the mean of its divisors is an integer number (73188).

2545491 is an apocalyptic number.

545491 is a deficient number, since it is larger than the sum of its proper divisors (40013).

545491 is a wasteful number, since it uses less digits than its factorization.

545491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701.

The product of its digits is 3600, while the sum is 28.

The square root of 545491 is about 738.5736253076. The cubic root of 545491 is about 81.7076142473.

The spelling of 545491 in words is "five hundred forty-five thousand, four hundred ninety-one".

Divisors: 1 23 37 641 851 14743 23717 545491