85552031 has 4 divisors (see below), whose sum is σ = 85599864. Its totient is φ = 85504200.

The previous prime is 85552013. The next prime is 85552043. The reversal of 85552031 is 13025558.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85552031 - 2⁶ = 85551967 is a prime.

It is a super-2 number, since 2×85552031² = 14638300016449922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85551985 and 85552003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85552081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21125 + ... + 24846.

It is an arithmetic number, because the mean of its divisors is an integer number (21399966).

Almost surely, 2^85552031 is an apocalyptic number.

85552031 is a deficient number, since it is larger than the sum of its proper divisors (47833).

85552031 is a wasteful number, since it uses less digits than its factorization.

85552031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47832.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 85552031 is about 9249.4340907971. The cubic root of 85552031 is about 440.6327518110.

Adding to 85552031 its reverse (13025558), we get a palindrome (98577589).

The spelling of 85552031 in words is "eighty-five million, five hundred fifty-two thousand, thirty-one".