52669945 has 16 divisors (see below), whose sum is σ = 65610000. Its totient is φ = 40542208.

The previous prime is 52669943. The next prime is 52669951. The reversal of 52669945 is 54996625.

It can be written as a sum of positive squares in 8 ways, for example, as 2359296 + 50310649 = 1536^2 + 7093^2 .

It is a cyclic number.

It is not a de Polignac number, because 52669945 - 2¹ = 52669943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52669895 and 52669904.

It is not an unprimeable number, because it can be changed into a prime (52669943) 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, 64701 + ... + 65509.

It is an arithmetic number, because the mean of its divisors is an integer number (4100625).

Almost surely, 2^52669945 is an apocalyptic number.

It is an amenable number.

52669945 is a deficient number, since it is larger than the sum of its proper divisors (12940055).

52669945 is a wasteful number, since it uses less digits than its factorization.

52669945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292.

The product of its digits is 583200, while the sum is 46.

The square root of 52669945 is about 7257.4062170999. The cubic root of 52669945 is about 374.8472147966.

The spelling of 52669945 in words is "fifty-two million, six hundred sixty-nine thousand, nine hundred forty-five".