7940522 has 4 divisors (see below), whose sum is σ = 11910786. Its totient is φ = 3970260.

The previous prime is 7940521. The next prime is 7940539. The reversal of 7940522 is 2250497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2250497 = 97 ⋅23201.

It can be written as a sum of positive squares in only one way, i.e., 6355441 + 1585081 = 2521^2 + 1259^2 .

It is a super-3 number, since 3×7940522³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (7940521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1985129 + ... + 1985132.

Almost surely, 2^7940522 is an apocalyptic number.

7940522 is a deficient number, since it is larger than the sum of its proper divisors (3970264).

7940522 is a wasteful number, since it uses less digits than its factorization.

7940522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3970263.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 7940522 is about 2817.8931846328. The cubic root of 7940522 is about 199.5031165565.

The spelling of 7940522 in words is "seven million, nine hundred forty thousand, five hundred twenty-two".