117020537 has 4 divisors (see below), whose sum is σ = 123904116. Its totient is φ = 110136960.

The previous prime is 117020507. The next prime is 117020549. The reversal of 117020537 is 735020711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42042256 + 74978281 = 6484^2 + 8659^2 .

It is a cyclic number.

It is not a de Polignac number, because 117020537 - 2⁶ = 117020473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117020507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3441764 + ... + 3441797.

It is an arithmetic number, because the mean of its divisors is an integer number (30976029).

Almost surely, 2^117020537 is an apocalyptic number.

117020537 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

117020537 is a deficient number, since it is larger than the sum of its proper divisors (6883579).

117020537 is an equidigital number, since it uses as much as digits as its factorization.

117020537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6883578.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 117020537 is about 10817.6031078978. The cubic root of 117020537 is about 489.1259400472.

The spelling of 117020537 in words is "one hundred seventeen million, twenty thousand, five hundred thirty-seven".