72497045 has 8 divisors (see below), whose sum is σ = 87143424. Its totient is φ = 57899664.

The previous prime is 72497041. The next prime is 72497053. The reversal of 72497045 is 54079427.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72497045 - 2² = 72497041 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72497041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8909 + ... + 14978.

It is an arithmetic number, because the mean of its divisors is an integer number (10892928).

Almost surely, 2^72497045 is an apocalyptic number.

It is an amenable number.

72497045 is a deficient number, since it is larger than the sum of its proper divisors (14646379).

72497045 is a wasteful number, since it uses less digits than its factorization.

72497045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24499.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 72497045 is about 8514.5196576202. The cubic root of 72497045 is about 416.9718805500.

The spelling of 72497045 in words is "seventy-two million, four hundred ninety-seven thousand, forty-five".