52109145 has 72 divisors (see below), whose sum is σ = 103521600. Its totient is φ = 24045120.

The previous prime is 52109137. The next prime is 52109147. The reversal of 52109145 is 54190125.

It is not a de Polignac number, because 52109145 - 2³ = 52109137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52109147) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 261756 + ... + 261954.

It is an arithmetic number, because the mean of its divisors is an integer number (1437800).

Almost surely, 2^52109145 is an apocalyptic number.

52109145 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

52109145 is a deficient number, since it is larger than the sum of its proper divisors (51412455).

52109145 is a wasteful number, since it uses less digits than its factorization.

52109145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 52109145 is about 7218.6664280877. Note that the first 3 decimals coincide. The cubic root of 52109145 is about 373.5120773717.

The spelling of 52109145 in words is "fifty-two million, one hundred nine thousand, one hundred forty-five".