553981995 has 72 divisors (see below), whose sum is σ = 1122277104. Its totient is φ = 252056448.

The previous prime is 553981991. The next prime is 553982003. The reversal of 553981995 is 599189355.

It is a happy number.

553981995 is a `hidden beast` number, since 5 + 539 + 8 + 19 + 95 = 666.

It is not a de Polignac number, because 553981995 - 2² = 553981991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (553981991) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 610332 + ... + 611238.

It is an arithmetic number, because the mean of its divisors is an integer number (15587182).

Almost surely, 2^553981995 is an apocalyptic number.

553981995 is an abundant number, since it is smaller than the sum of its proper divisors (568295109).

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

553981995 is a wasteful number, since it uses less digits than its factorization.

553981995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1199 counting only the distinct ones).

The product of its digits is 2187000, while the sum is 54.

The square root of 553981995 is about 23536.8221091973. The cubic root of 553981995 is about 821.2938106915.

The spelling of 553981995 in words is "five hundred fifty-three million, nine hundred eighty-one thousand, nine hundred ninety-five".