72075061 has 4 divisors (see below), whose sum is σ = 72220000. Its totient is φ = 71930124.

The previous prime is 72075041. The next prime is 72075067. The reversal of 72075061 is 16057027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72075061 - 2⁹ = 72074549 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 (72075067) 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, 71721 + ... + 72718.

It is an arithmetic number, because the mean of its divisors is an integer number (18055000).

Almost surely, 2^72075061 is an apocalyptic number.

It is an amenable number.

72075061 is a deficient number, since it is larger than the sum of its proper divisors (144939).

72075061 is a wasteful number, since it uses less digits than its factorization.

72075061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144938.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 72075061 is about 8489.7032339181. The cubic root of 72075061 is about 416.1612821532.

The spelling of 72075061 in words is "seventy-two million, seventy-five thousand, sixty-one".