7072531 has 2 divisors, whose sum is σ = 7072532. Its totient is φ = 7072530.

The previous prime is 7072517. The next prime is 7072537. The reversal of 7072531 is 1352707.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7072531 - 2¹⁵ = 7039763 is a prime.

It is a super-2 number, since 2×7072531² = 100041389491922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7072496 and 7072505.

It is not a weakly prime, because it can be changed into another prime (7072537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3536265 + 3536266.

It is an arithmetic number, because the mean of its divisors is an integer number (3536266).

Almost surely, 2^7072531 is an apocalyptic number.

7072531 is a deficient number, since it is larger than the sum of its proper divisors (1).

7072531 is an equidigital number, since it uses as much as digits as its factorization.

7072531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 7072531 is about 2659.4230577326. The cubic root of 7072531 is about 191.9515484658.

It can be divided in two parts, 70725 and 31, that added together give a square (70756 = 266²).

The spelling of 7072531 in words is "seven million, seventy-two thousand, five hundred thirty-one".