85472237 has 2 divisors, whose sum is σ = 85472238. Its totient is φ = 85472236.

The previous prime is 85472227. The next prime is 85472263. The reversal of 85472237 is 73227458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79192201 + 6280036 = 8899^2 + 2506^2 .

It is a cyclic number.

It is not a de Polignac number, because 85472237 - 2¹⁰ = 85471213 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85472237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85472227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42736118 + 42736119.

It is an arithmetic number, because the mean of its divisors is an integer number (42736119).

Almost surely, 2^85472237 is an apocalyptic number.

It is an amenable number.

85472237 is a deficient number, since it is larger than the sum of its proper divisors (1).

85472237 is an equidigital number, since it uses as much as digits as its factorization.

85472237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 38.

The square root of 85472237 is about 9245.1196314596. The cubic root of 85472237 is about 440.4957171270.

The spelling of 85472237 in words is "eighty-five million, four hundred seventy-two thousand, two hundred thirty-seven".