997951050 has 96 divisors (see below), whose sum is σ = 2824372800. Its totient is φ = 258914880.

The previous prime is 997951049. The next prime is 997951061. The reversal of 997951050 is 50159799.

It is a super-2 number, since 2×997951050² = 1991812596392205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 997950987 and 997951005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39961 + ... + 59939.

It is an arithmetic number, because the mean of its divisors is an integer number (29420550).

Almost surely, 2^997951050 is an apocalyptic number.

997951050 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 997951050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1412186400).

997951050 is an abundant number, since it is smaller than the sum of its proper divisors (1826421750).

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

997951050 is a wasteful number, since it uses less digits than its factorization.

997951050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20037 (or 20026 counting only the distinct ones).

The product of its (nonzero) digits is 127575, while the sum is 45.

The square root of 997951050 is about 31590.3632457748. The cubic root of 997951050 is about 999.3165496687.

The spelling of 997951050 in words is "nine hundred ninety-seven million, nine hundred fifty-one thousand, fifty".