85388451 has 16 divisors (see below), whose sum is σ = 120042240. Its totient is φ = 53840160.

The previous prime is 85388449. The next prime is 85388453. The reversal of 85388451 is 15488358.

It is an interprime number because it is at equal distance from previous prime (85388449) and next prime (85388453).

It is not a de Polignac number, because 85388451 - 2¹ = 85388449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85388453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58041 + ... + 59493.

It is an arithmetic number, because the mean of its divisors is an integer number (7502640).

Almost surely, 2^85388451 is an apocalyptic number.

85388451 is a deficient number, since it is larger than the sum of its proper divisors (34653789).

85388451 is a wasteful number, since it uses less digits than its factorization.

85388451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506.

The product of its digits is 153600, while the sum is 42.

The square root of 85388451 is about 9240.5871566692. The cubic root of 85388451 is about 440.3517349336.

The spelling of 85388451 in words is "eighty-five million, three hundred eighty-eight thousand, four hundred fifty-one".