85552155049 has 3 divisors (see below), whose sum is σ = 85552447543. Its totient is φ = 85551862556.

The previous prime is 85552155011. The next prime is 85552155107. The reversal of 85552155049 is 94055125558.

It is a happy number.

The square root of 85552155049 is 292493.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 27052025625 + 58500129424 = 164475^2 + 241868^2 .

It is not a de Polignac number, because 85552155049 - 2⁹ = 85552154537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85552154993 and 85552155011.

It is not an unprimeable number, because it can be changed into a prime (85552155149) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 146247 + ... + 438739.

Almost surely, 2^85552155049 is an apocalyptic number.

85552155049 is the 292493-rd square number.

85552155049 is the 146247-th centered octagonal number.

It is an amenable number.

85552155049 is a deficient number, since it is larger than the sum of its proper divisors (292494).

85552155049 is an frugal number, since it uses more digits than its factorization.

85552155049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584986 (or 292493 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 49.

Multiplying 85552155049 by its sum of digits (49), we get a square (4192055597401 = 2047451²).

The spelling of 85552155049 in words is "eighty-five billion, five hundred fifty-two million, one hundred fifty-five thousand, forty-nine".