72523641 has 8 divisors (see below), whose sum is σ = 96737760. Its totient is φ = 48329312.

The previous prime is 72523631. The next prime is 72523651. The reversal of 72523641 is 14632527.

It is an interprime number because it is at equal distance from previous prime (72523631) and next prime (72523651).

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 72523641 - 2¹⁰ = 72522617 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72523599 and 72523608.

It is not an unprimeable number, because it can be changed into a prime (72523631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10486 + ... + 15968.

It is an arithmetic number, because the mean of its divisors is an integer number (12092220).

Almost surely, 2^72523641 is an apocalyptic number.

It is an amenable number.

72523641 is a deficient number, since it is larger than the sum of its proper divisors (24214119).

72523641 is a wasteful number, since it uses less digits than its factorization.

72523641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9895.

The product of its digits is 10080, while the sum is 30.

The square root of 72523641 is about 8516.0813171317. The cubic root of 72523641 is about 417.0228639075.

The spelling of 72523641 in words is "seventy-two million, five hundred twenty-three thousand, six hundred forty-one".