72250061 has 8 divisors (see below), whose sum is σ = 81191040. Its totient is φ = 63792432.

The previous prime is 72250039. The next prime is 72250067. The reversal of 72250061 is 16005227.

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

It is not a de Polignac number, because 72250061 - 2⁶ = 72249997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72250067) 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, 120521 + ... + 121118.

It is an arithmetic number, because the mean of its divisors is an integer number (10148880).

Almost surely, 2^72250061 is an apocalyptic number.

It is an amenable number.

72250061 is a deficient number, since it is larger than the sum of its proper divisors (8940979).

72250061 is a wasteful number, since it uses less digits than its factorization.

72250061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241675.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 72250061 is about 8500.0035882345. The cubic root of 72250061 is about 416.4978264902.

Adding to 72250061 its reverse (16005227), we get a palindrome (88255288).

The spelling of 72250061 in words is "seventy-two million, two hundred fifty thousand, sixty-one".