997454053 has 4 divisors (see below), whose sum is σ = 997754188. Its totient is φ = 997153920.

The previous prime is 997454023. The next prime is 997454057. The reversal of 997454053 is 350454799.

It is a happy number.

It is the 12894-th star number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350454799 = 12343 ⋅28393.

It can be written as a sum of positive squares in 2 ways, for example, as 753063364 + 244390689 = 27442^2 + 15633^2 .

It is a cyclic number.

It is not a de Polignac number, because 997454053 - 2⁵ = 997454021 is a prime.

It is a super-2 number, since 2×997454053² = 1989829175692253618, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 997453994 and 997454012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997454057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145026 + ... + 151747.

It is an arithmetic number, because the mean of its divisors is an integer number (249438547).

Almost surely, 2^997454053 is an apocalyptic number.

It is an amenable number.

997454053 is a deficient number, since it is larger than the sum of its proper divisors (300135).

997454053 is a wasteful number, since it uses less digits than its factorization.

997454053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300134.

The product of its (nonzero) digits is 680400, while the sum is 46.

The square root of 997454053 is about 31582.4959906591. The cubic root of 997454053 is about 999.1506297745.

The spelling of 997454053 in words is "nine hundred ninety-seven million, four hundred fifty-four thousand, fifty-three".