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45551 = 1141101
BaseRepresentation
bin1011000111101111
32022111002
423013233
52424201
6550515
7246542
oct130757
968432
1045551
1131250
122243b
131796c
1412859
15d76b
hexb1ef

45551 has 8 divisors (see below), whose sum is σ = 51408. Its totient is φ = 40000.

The previous prime is 45541. The next prime is 45553. The reversal of 45551 is 15554.

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

It is a 6-Lehmer number, since φ(45551) divides (45551-1)6.

It is a cyclic number.

It is not a de Polignac number, because 45551 - 214 = 29167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401 + ... + 501.

It is an arithmetic number, because the mean of its divisors is an integer number (6426).

245551 is an apocalyptic number.

45551 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

45551 is a deficient number, since it is larger than the sum of its proper divisors (5857).

45551 is a wasteful number, since it uses less digits than its factorization.

45551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153.

The product of its digits is 500, while the sum is 20.

The square root of 45551 is about 213.4268024406. The cubic root of 45551 is about 35.7135184597.

It can be divided in two parts, 4 and 5551, that added together give a palindrome (5555).

The spelling of 45551 in words is "forty-five thousand, five hundred fifty-one".

Divisors: 1 11 41 101 451 1111 4141 45551