72550245 has 16 divisors (see below), whose sum is σ = 118780992. Its totient is φ = 37793280.

The previous prime is 72550243. The next prime is 72550273. The reversal of 72550245 is 54205527.

It is not a de Polignac number, because 72550245 - 2¹ = 72550243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72550243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55596 + ... + 56885.

It is an arithmetic number, because the mean of its divisors is an integer number (7423812).

Almost surely, 2^72550245 is an apocalyptic number.

It is an amenable number.

72550245 is a deficient number, since it is larger than the sum of its proper divisors (46230747).

72550245 is a wasteful number, since it uses less digits than its factorization.

72550245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112532.

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 72550245 is about 8517.6431599357. The cubic root of 72550245 is about 417.0738501321.

The spelling of 72550245 in words is "seventy-two million, five hundred fifty thousand, two hundred forty-five".