981992552 has 8 divisors (see below), whose sum is σ = 1841236050. Its totient is φ = 490996272.

The previous prime is 981992537. The next prime is 981992581. The reversal of 981992552 is 255299189.

It can be written as a sum of positive squares in only one way, i.e., 897242116 + 84750436 = 29954^2 + 9206^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 981992552.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61374527 + ... + 61374542.

Almost surely, 2^981992552 is an apocalyptic number.

It is an amenable number.

981992552 is a deficient number, since it is larger than the sum of its proper divisors (859243498).

981992552 is a wasteful number, since it uses less digits than its factorization.

981992552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122749075 (or 122749071 counting only the distinct ones).

The product of its digits is 583200, while the sum is 50.

The square root of 981992552 is about 31336.7603941441. The cubic root of 981992552 is about 993.9611227030.

The spelling of 981992552 in words is "nine hundred eighty-one million, nine hundred ninety-two thousand, five hundred fifty-two".