40117537 has 2 divisors, whose sum is σ = 40117538. Its totient is φ = 40117536.

The previous prime is 40117499. The next prime is 40117541. The reversal of 40117537 is 73571104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20439441 + 19678096 = 4521^2 + 4436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40117537 is a prime.

It is not a weakly prime, because it can be changed into another prime (40114537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20058768 + 20058769.

It is an arithmetic number, because the mean of its divisors is an integer number (20058769).

Almost surely, 2^40117537 is an apocalyptic number.

It is an amenable number.

40117537 is a deficient number, since it is larger than the sum of its proper divisors (1).

40117537 is an equidigital number, since it uses as much as digits as its factorization.

40117537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 40117537 is about 6333.8406200346. The cubic root of 40117537 is about 342.3298375076.

The spelling of 40117537 in words is "forty million, one hundred seventeen thousand, five hundred thirty-seven".