72214541 has 4 divisors (see below), whose sum is σ = 82530912. Its totient is φ = 61898172.

The previous prime is 72214537. The next prime is 72214547. The reversal of 72214541 is 14541227.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14541227 = 503 ⋅28909.

It is not a de Polignac number, because 72214541 - 2² = 72214537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72214541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72214547) 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, 5158175 + ... + 5158188.

It is an arithmetic number, because the mean of its divisors is an integer number (20632728).

Almost surely, 2^72214541 is an apocalyptic number.

It is an amenable number.

72214541 is a deficient number, since it is larger than the sum of its proper divisors (10316371).

72214541 is a wasteful number, since it uses less digits than its factorization.

72214541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10316370.

The product of its digits is 2240, while the sum is 26.

The square root of 72214541 is about 8497.9139204866. The cubic root of 72214541 is about 416.4295615982.

Adding to 72214541 its reverse (14541227), we get a palindrome (86755768).

The spelling of 72214541 in words is "seventy-two million, two hundred fourteen thousand, five hundred forty-one".