69145541 has 16 divisors (see below), whose sum is σ = 76459200. Its totient is φ = 62270208.

The previous prime is 69145523. The next prime is 69145543. The reversal of 69145541 is 14554196.

It is a cyclic number.

It is not a de Polignac number, because 69145541 - 2²⁶ = 2036677 is a prime.

It is a super-2 number, since 2×69145541² = 9562211680365362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69145543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35981 + ... + 37853.

It is an arithmetic number, because the mean of its divisors is an integer number (4778700).

Almost surely, 2^69145541 is an apocalyptic number.

It is an amenable number.

69145541 is a deficient number, since it is larger than the sum of its proper divisors (7313659).

69145541 is a wasteful number, since it uses less digits than its factorization.

69145541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988.

The product of its digits is 21600, while the sum is 35.

The square root of 69145541 is about 8315.3797868768. The cubic root of 69145541 is about 410.4447701622. Note that the first 3 decimals are identical.

The spelling of 69145541 in words is "sixty-nine million, one hundred forty-five thousand, five hundred forty-one".