85472551 has 2 divisors, whose sum is σ = 85472552. Its totient is φ = 85472550.

The previous prime is 85472539. The next prime is 85472557. The reversal of 85472551 is 15527458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85472551 - 2¹³ = 85464359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85472551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85472557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42736275 + 42736276.

It is an arithmetic number, because the mean of its divisors is an integer number (42736276).

Almost surely, 2^85472551 is an apocalyptic number.

85472551 is a deficient number, since it is larger than the sum of its proper divisors (1).

85472551 is an equidigital number, since it uses as much as digits as its factorization.

85472551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56000, while the sum is 37.

The square root of 85472551 is about 9245.1366133768. The cubic root of 85472551 is about 440.4962565438.

The spelling of 85472551 in words is "eighty-five million, four hundred seventy-two thousand, five hundred fifty-one".