40572545 has 16 divisors (see below), whose sum is σ = 52572240. Its totient is φ = 29881344.

The previous prime is 40572541. The next prime is 40572547. The reversal of 40572545 is 54527504.

It can be written as a sum of positive squares in 8 ways, for example, as 11498881 + 29073664 = 3391^2 + 5392^2 .

It is a cyclic number.

It is not a de Polignac number, because 40572545 - 2² = 40572541 is a prime.

It is a super-2 number, since 2×40572545² = 3292262815554050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40572541) 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 15 ways as a sum of consecutive naturals, for example, 36437 + ... + 37533.

It is an arithmetic number, because the mean of its divisors is an integer number (3285765).

Almost surely, 2^40572545 is an apocalyptic number.

It is an amenable number.

40572545 is a deficient number, since it is larger than the sum of its proper divisors (11999695).

40572545 is a wasteful number, since it uses less digits than its factorization.

40572545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684.

The product of its (nonzero) digits is 28000, while the sum is 32.

The square root of 40572545 is about 6369.6581540927. The cubic root of 40572545 is about 343.6191956318.

The spelling of 40572545 in words is "forty million, five hundred seventy-two thousand, five hundred forty-five".