997814052 has 60 divisors (see below), whose sum is σ = 2612910300. Its totient is φ = 332040384.

The previous prime is 997814029. The next prime is 997814063. The reversal of 997814052 is 250418799.

It can be written as a sum of positive squares in 2 ways, for example, as 905769216 + 92044836 = 30096^2 + 9594^2 .

It is a junction number, because it is equal to n+sod(n) for n = 997813989 and 997814007.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 217074 + ... + 221622.

It is an arithmetic number, because the mean of its divisors is an integer number (43548505).

Almost surely, 2^997814052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 997814052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1306455150).

997814052 is an abundant number, since it is smaller than the sum of its proper divisors (1615096248).

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

997814052 is a wasteful number, since it uses less digits than its factorization.

With its successor (997814053) it forms an eRAP, since the sums of their prime factors are consecutive (5242 and 5243).

997814052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5242 (or 5231 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 997814052 is about 31588.1948202173. The cubic root of 997814052 is about 999.2708190911.

The spelling of 997814052 in words is "nine hundred ninety-seven million, eight hundred fourteen thousand, fifty-two".