37222987 has 2 divisors, whose sum is σ = 37222988. Its totient is φ = 37222986.

The previous prime is 37222981. The next prime is 37223027. The reversal of 37222987 is 78922273.

It is an a-pointer prime, because the next prime (37223027) can be obtained adding 37222987 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37222987 is a prime.

It is a super-2 number, since 2×37222987² = 2771101522404338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (37222981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18611493 + 18611494.

It is an arithmetic number, because the mean of its divisors is an integer number (18611494).

Almost surely, 2^37222987 is an apocalyptic number.

37222987 is a deficient number, since it is larger than the sum of its proper divisors (1).

37222987 is an equidigital number, since it uses as much as digits as its factorization.

37222987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 37222987 is about 6101.0644153295. The cubic root of 37222987 is about 333.8902522281.

The spelling of 37222987 in words is "thirty-seven million, two hundred twenty-two thousand, nine hundred eighty-seven".