2045522 has 4 divisors (see below), whose sum is σ = 3068286. Its totient is φ = 1022760.

The previous prime is 2045509. The next prime is 2045539. The reversal of 2045522 is 2255402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2255402 = 2 ⋅1127701.

It can be written as a sum of positive squares in only one way, i.e., 2042041 + 3481 = 1429^2 + 59^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2045494 and 2045503.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511379 + ... + 511382.

2^2045522 is an apocalyptic number.

2045522 is a deficient number, since it is larger than the sum of its proper divisors (1022764).

2045522 is a wasteful number, since it uses less digits than its factorization.

2045522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022763.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 2045522 is about 1430.2174659820. The cubic root of 2045522 is about 126.9408449990.

The spelling of 2045522 in words is "two million, forty-five thousand, five hundred twenty-two".