72215054 has 4 divisors (see below), whose sum is σ = 108322584. Its totient is φ = 36107526.

The previous prime is 72215053. The next prime is 72215057. The reversal of 72215054 is 45051227.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72215053) 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 as a sum of consecutive naturals, namely, 18053762 + ... + 18053765.

It is an arithmetic number, because the mean of its divisors is an integer number (27080646).

Almost surely, 2^72215054 is an apocalyptic number.

72215054 is a deficient number, since it is larger than the sum of its proper divisors (36107530).

72215054 is a wasteful number, since it uses less digits than its factorization.

72215054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36107529.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 72215054 is about 8497.9441043113. The cubic root of 72215054 is about 416.4305476778.

The spelling of 72215054 in words is "seventy-two million, two hundred fifteen thousand, fifty-four".