85237651 has 2 divisors, whose sum is σ = 85237652. Its totient is φ = 85237650.

The previous prime is 85237613. The next prime is 85237661. The reversal of 85237651 is 15673258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85237651 - 2¹⁷ = 85106579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85237651.

It is not a weakly prime, because it can be changed into another prime (85237661) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42618825 + 42618826.

It is an arithmetic number, because the mean of its divisors is an integer number (42618826).

Almost surely, 2^85237651 is an apocalyptic number.

85237651 is a deficient number, since it is larger than the sum of its proper divisors (1).

85237651 is an equidigital number, since it uses as much as digits as its factorization.

85237651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 37.

The square root of 85237651 is about 9232.4238962474. The cubic root of 85237651 is about 440.0923549249.

It can be divided in two parts, 852 and 37651, that added together give a triangular number (38503 = T₂₇₇).

The spelling of 85237651 in words is "eighty-five million, two hundred thirty-seven thousand, six hundred fifty-one".