40546145 has 4 divisors (see below), whose sum is σ = 48655380. Its totient is φ = 32436912.

The previous prime is 40546141. The next prime is 40546153. The reversal of 40546145 is 54164504.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6801664 + 33744481 = 2608^2 + 5809^2 .

It is a cyclic number.

It is not a de Polignac number, because 40546145 - 2² = 40546141 is a prime.

It is a super-2 number, since 2×40546145² = 3287979748722050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40546141) 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, 4054610 + ... + 4054619.

It is an arithmetic number, because the mean of its divisors is an integer number (12163845).

Almost surely, 2^40546145 is an apocalyptic number.

It is an amenable number.

40546145 is a deficient number, since it is larger than the sum of its proper divisors (8109235).

40546145 is an equidigital number, since it uses as much as digits as its factorization.

40546145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8109234.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 40546145 is about 6367.5854921626. The cubic root of 40546145 is about 343.5446500243.

The spelling of 40546145 in words is "forty million, five hundred forty-six thousand, one hundred forty-five".