6972545 has 4 divisors (see below), whose sum is σ = 8367060. Its totient is φ = 5578032.

The previous prime is 6972517. The next prime is 6972547. The reversal of 6972545 is 5452796.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3301489 + 3671056 = 1817^2 + 1916^2 .

It is a cyclic number.

It is not a de Polignac number, because 6972545 - 2²² = 2778241 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6972499 and 6972508.

It is not an unprimeable number, because it can be changed into a prime (6972547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697250 + ... + 697259.

It is an arithmetic number, because the mean of its divisors is an integer number (2091765).

Almost surely, 2^6972545 is an apocalyptic number.

It is an amenable number.

6972545 is a deficient number, since it is larger than the sum of its proper divisors (1394515).

6972545 is a wasteful number, since it uses less digits than its factorization.

6972545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394514.

The product of its digits is 75600, while the sum is 38.

The square root of 6972545 is about 2640.5577062431. The cubic root of 6972545 is about 191.0426976170.

The spelling of 6972545 in words is "six million, nine hundred seventy-two thousand, five hundred forty-five".