2145527 has 4 divisors (see below), whose sum is σ = 2156616. Its totient is φ = 2134440.

The previous prime is 2145497. The next prime is 2145529. The reversal of 2145527 is 7255412.

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

It is a cyclic number.

It is not a de Polignac number, because 2145527 - 2¹⁰ = 2144503 is a prime.

It is a super-2 number, since 2×2145527² = 9206572215458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2145496 and 2145505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145529) 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 3 ways as a sum of consecutive naturals, for example, 5249 + ... + 5642.

It is an arithmetic number, because the mean of its divisors is an integer number (539154).

2^2145527 is an apocalyptic number.

2145527 is a deficient number, since it is larger than the sum of its proper divisors (11089).

2145527 is a wasteful number, since it uses less digits than its factorization.

2145527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11088.

The product of its digits is 2800, while the sum is 26.

The square root of 2145527 is about 1464.7617553718. The cubic root of 2145527 is about 128.9767199542.

The spelling of 2145527 in words is "two million, one hundred forty-five thousand, five hundred twenty-seven".