40553831 has 2 divisors, whose sum is σ = 40553832. Its totient is φ = 40553830.

The previous prime is 40553783. The next prime is 40553869. The reversal of 40553831 is 13835504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40553831 - 2¹⁰ = 40552807 is a prime.

It is a super-2 number, since 2×40553831² = 3289226417553122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40553794 and 40553803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40553131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20276915 + 20276916.

It is an arithmetic number, because the mean of its divisors is an integer number (20276916).

Almost surely, 2^40553831 is an apocalyptic number.

40553831 is a deficient number, since it is larger than the sum of its proper divisors (1).

40553831 is an equidigital number, since it uses as much as digits as its factorization.

40553831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 40553831 is about 6368.1889890298. The cubic root of 40553831 is about 343.5663562995.

The spelling of 40553831 in words is "forty million, five hundred fifty-three thousand, eight hundred thirty-one".