40557373 has 2 divisors, whose sum is σ = 40557374. Its totient is φ = 40557372.

The previous prime is 40557371. The next prime is 40557403. The reversal of 40557373 is 37375504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40411449 + 145924 = 6357^2 + 382^2 .

It is a cyclic number.

It is not a de Polignac number, because 40557373 - 2¹ = 40557371 is a prime.

It is a super-2 number, since 2×40557373² = 3289801009322258, which contains 22 as substring.

Together with 40557371, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40557371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20278686 + 20278687.

It is an arithmetic number, because the mean of its divisors is an integer number (20278687).

Almost surely, 2^40557373 is an apocalyptic number.

It is an amenable number.

40557373 is a deficient number, since it is larger than the sum of its proper divisors (1).

40557373 is an equidigital number, since it uses as much as digits as its factorization.

40557373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44100, while the sum is 34.

The square root of 40557373 is about 6368.4670840007. The cubic root of 40557373 is about 343.5763584504.

The spelling of 40557373 in words is "forty million, five hundred fifty-seven thousand, three hundred seventy-three".