1085546553 has 16 divisors (see below), whose sum is σ = 1781410176. Its totient is φ = 572595840.

The previous prime is 1085546537. The next prime is 1085546569. The reversal of 1085546553 is 3556455801.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1085546537) and next prime (1085546569).

It is not a de Polignac number, because 1085546553 - 2⁴ = 1085546537 is a prime.

It is a super-4 number, since 4×1085546553⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1085546153) 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, 1987908 + ... + 1988453.

It is an arithmetic number, because the mean of its divisors is an integer number (111338136).

Almost surely, 2^1085546553 is an apocalyptic number.

1085546553 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1085546553 is a deficient number, since it is larger than the sum of its proper divisors (695863623).

1085546553 is a wasteful number, since it uses less digits than its factorization.

1085546553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3976384.

The product of its (nonzero) digits is 360000, while the sum is 42.

The square root of 1085546553 is about 32947.6334962012. The cubic root of 1085546553 is about 1027.7389535477.

The spelling of 1085546553 in words is "one billion, eighty-five million, five hundred forty-six thousand, five hundred fifty-three".