40572101 has 2 divisors, whose sum is σ = 40572102. Its totient is φ = 40572100.

The previous prime is 40572079. The next prime is 40572107. The reversal of 40572101 is 10127504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38763076 + 1809025 = 6226^2 + 1345^2 .

It is a cyclic number.

It is not a de Polignac number, because 40572101 - 2¹⁰ = 40571077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40572107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20286050 + 20286051.

It is an arithmetic number, because the mean of its divisors is an integer number (20286051).

Almost surely, 2^40572101 is an apocalyptic number.

It is an amenable number.

40572101 is a deficient number, since it is larger than the sum of its proper divisors (1).

40572101 is an equidigital number, since it uses as much as digits as its factorization.

40572101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 40572101 is about 6369.6233012636. The cubic root of 40572101 is about 343.6179421777.

Adding to 40572101 its reverse (10127504), we get a palindrome (50699605).

The spelling of 40572101 in words is "forty million, five hundred seventy-two thousand, one hundred one".