7061531 has 4 divisors (see below), whose sum is σ = 7092072. Its totient is φ = 7030992.

The previous prime is 7061513. The next prime is 7061563. The reversal of 7061531 is 1351607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1351607 = 383 ⋅3529.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7061531 is a prime.

It is a super-2 number, since 2×7061531² = 99730440127922, 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 = 7061497 and 7061506.

It is not an unprimeable number, because it can be changed into a prime (7061501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14921 + ... + 15386.

It is an arithmetic number, because the mean of its divisors is an integer number (1773018).

Almost surely, 2^7061531 is an apocalyptic number.

7061531 is a deficient number, since it is larger than the sum of its proper divisors (30541).

7061531 is a wasteful number, since it uses less digits than its factorization.

7061531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30540.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 7061531 is about 2657.3541352255. The cubic root of 7061531 is about 191.8519819106.

The spelling of 7061531 in words is "seven million, sixty-one thousand, five hundred thirty-one".