40215037 has 2 divisors, whose sum is σ = 40215038. Its totient is φ = 40215036.

The previous prime is 40215031. The next prime is 40215073. The reversal of 40215037 is 73051204.

Together with next prime (40215073) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40119556 + 95481 = 6334^2 + 309^2 .

It is a cyclic number.

It is not a de Polignac number, because 40215037 - 2¹¹ = 40212989 is a prime.

It is a super-2 number, since 2×40215037² = 3234498401822738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40214999 and 40215017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40215031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20107518 + 20107519.

It is an arithmetic number, because the mean of its divisors is an integer number (20107519).

Almost surely, 2^40215037 is an apocalyptic number.

It is an amenable number.

40215037 is a deficient number, since it is larger than the sum of its proper divisors (1).

40215037 is an equidigital number, since it uses as much as digits as its factorization.

40215037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 40215037 is about 6341.5327011693. The cubic root of 40215037 is about 342.6069412268.

The spelling of 40215037 in words is "forty million, two hundred fifteen thousand, thirty-seven".