813097533 has 16 divisors (see below), whose sum is σ = 1172035520. Its totient is φ = 499654656.

The previous prime is 813097531. The next prime is 813097547. The reversal of 813097533 is 335790318.

It is not a de Polignac number, because 813097533 - 2¹ = 813097531 is a prime.

It is a super-2 number, since 2×813097533² = 1322255196341372178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 813097491 and 813097500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813097531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190660 + ... + 194877.

It is an arithmetic number, because the mean of its divisors is an integer number (73252220).

Almost surely, 2^813097533 is an apocalyptic number.

It is an amenable number.

813097533 is a deficient number, since it is larger than the sum of its proper divisors (358937987).

813097533 is a wasteful number, since it uses less digits than its factorization.

813097533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385596.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 813097533 is about 28514.8651233002. The cubic root of 813097533 is about 933.3564817246.

The spelling of 813097533 in words is "eight hundred thirteen million, ninety-seven thousand, five hundred thirty-three".