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45075031 = 411099391
BaseRepresentation
bin1010101111110…
…0101001010111
310010211001022121
42223330221113
543014400111
64250040411
71055063041
oct253745127
9103731277
1045075031
11234975a1
1213119107
139452821
145db4a91
153e55871
hex2afca57

45075031 has 4 divisors (see below), whose sum is σ = 46174464. Its totient is φ = 43975600.

The previous prime is 45075013. The next prime is 45075047. The reversal of 45075031 is 13057054.

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

It is a cyclic number.

It is not a de Polignac number, because 45075031 - 25 = 45074999 is a prime.

It is a super-2 number, since 2×450750312 = 4063516839301922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45074987 and 45075005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45075061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549655 + ... + 549736.

It is an arithmetic number, because the mean of its divisors is an integer number (11543616).

Almost surely, 245075031 is an apocalyptic number.

45075031 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

45075031 is the 3003-rd centered decagonal number.

45075031 is a deficient number, since it is larger than the sum of its proper divisors (1099433).

45075031 is a wasteful number, since it uses less digits than its factorization.

45075031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099432.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 45075031 is about 6713.7940838247. The cubic root of 45075031 is about 355.8869075396.

The spelling of 45075031 in words is "forty-five million, seventy-five thousand, thirty-one".

Divisors: 1 41 1099391 45075031