85474451 has 2 divisors, whose sum is σ = 85474452. Its totient is φ = 85474450.

The previous prime is 85474439. The next prime is 85474507. The reversal of 85474451 is 15447458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85474451 - 2¹⁸ = 85212307 is a prime.

It is a Chen prime.

It is equal to p_4969730 and since 85474451 and 4969730 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (85474651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42737225 + 42737226.

It is an arithmetic number, because the mean of its divisors is an integer number (42737226).

Almost surely, 2^85474451 is an apocalyptic number.

85474451 is a deficient number, since it is larger than the sum of its proper divisors (1).

85474451 is an equidigital number, since it uses as much as digits as its factorization.

85474451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89600, while the sum is 38.

The square root of 85474451 is about 9245.2393695350. The cubic root of 85474451 is about 440.4995205027.

The spelling of 85474451 in words is "eighty-five million, four hundred seventy-four thousand, four hundred fifty-one".