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40020055 = 58004011
BaseRepresentation
bin1001100010101…
…0100001010111
32210022020012021
42120222201113
540221120210
63545434011
7664110355
oct230524127
983266167
1040020055
1120654729
121149b907
1383a2a0a
14545a7d5
1537a7bda
hex262a857

40020055 has 4 divisors (see below), whose sum is σ = 48024072. Its totient is φ = 32016040.

The previous prime is 40020041. The next prime is 40020067. The reversal of 40020055 is 55002004.

Adding to 40020055 its reverse (55002004), we get a palindrome (95022059).

It is a happy number.

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

It is not a de Polignac number, because 40020055 - 225 = 6465623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4002001 + ... + 4002010.

It is an arithmetic number, because the mean of its divisors is an integer number (12006018).

Almost surely, 240020055 is an apocalyptic number.

40020055 is a deficient number, since it is larger than the sum of its proper divisors (8004017).

40020055 is an equidigital number, since it uses as much as digits as its factorization.

40020055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8004016.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 40020055 is about 6326.1406086175. The cubic root of 40020055 is about 342.0523357318.

The spelling of 40020055 in words is "forty million, twenty thousand, fifty-five".

Divisors: 1 5 8004011 40020055