165497541 has 8 divisors (see below), whose sum is σ = 240723744. Its totient is φ = 100301520.

The previous prime is 165497491. The next prime is 165497573. The reversal of 165497541 is 145794561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165497541 - 2¹³ = 165489349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165497493 and 165497502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165497741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2507506 + ... + 2507571.

It is an arithmetic number, because the mean of its divisors is an integer number (30090468).

Almost surely, 2^165497541 is an apocalyptic number.

165497541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

165497541 is a deficient number, since it is larger than the sum of its proper divisors (75226203).

165497541 is a wasteful number, since it uses less digits than its factorization.

165497541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5015091.

The product of its digits is 151200, while the sum is 42.

The square root of 165497541 is about 12864.5847581646. The cubic root of 165497541 is about 549.0313982328.

It can be divided in two parts, 16549 and 7541, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 165497541 in words is "one hundred sixty-five million, four hundred ninety-seven thousand, five hundred forty-one".