85443100 has 18 divisors (see below), whose sum is σ = 185411744. Its totient is φ = 34177200.

The previous prime is 85443097. The next prime is 85443103. The reversal of 85443100 is 134458.

It is an interprime number because it is at equal distance from previous prime (85443097) and next prime (85443103).

It is a super-2 number, since 2×85443100² = 14601046675220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85443103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 427116 + ... + 427315.

Almost surely, 2^85443100 is an apocalyptic number.

It is an amenable number.

85443100 is an abundant number, since it is smaller than the sum of its proper divisors (99968644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85443100 is a wasteful number, since it uses less digits than its factorization.

85443100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854445 (or 854438 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 85443100 is about 9243.5436927620. The cubic root of 85443100 is about 440.4456572757.

Adding to 85443100 its reverse (134458), we get a palindrome (85577558).

The spelling of 85443100 in words is "eighty-five million, four hundred forty-three thousand, one hundred".