72150007 has 4 divisors (see below), whose sum is σ = 73332856. Its totient is φ = 70967160.

The previous prime is 72149983. The next prime is 72150047. The reversal of 72150007 is 70005127.

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

It is a cyclic number.

It is not a de Polignac number, because 72150007 - 2¹⁵ = 72117239 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 72150007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72150047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 591333 + ... + 591454.

It is an arithmetic number, because the mean of its divisors is an integer number (18333214).

Almost surely, 2^72150007 is an apocalyptic number.

72150007 is a deficient number, since it is larger than the sum of its proper divisors (1182849).

72150007 is a wasteful number, since it uses less digits than its factorization.

72150007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182848.

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 72150007 is about 8494.1160222827. The cubic root of 72150007 is about 416.3054782112.

The spelling of 72150007 in words is "seventy-two million, one hundred fifty thousand, seven".