72104751 has 12 divisors (see below), whose sum is σ = 106117128. Its totient is φ = 47162544.

The previous prime is 72104743. The next prime is 72104761. The reversal of 72104751 is 15740127.

It is not a de Polignac number, because 72104751 - 2³ = 72104743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72104731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75105 + ... + 76058.

It is an arithmetic number, because the mean of its divisors is an integer number (8843094).

Almost surely, 2^72104751 is an apocalyptic number.

72104751 is a deficient number, since it is larger than the sum of its proper divisors (34012377).

72104751 is a wasteful number, since it uses less digits than its factorization.

72104751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151222 (or 151219 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 72104751 is about 8491.4516426816. The cubic root of 72104751 is about 416.2184176455.

Adding to 72104751 its reverse (15740127), we get a palindrome (87844878).

The spelling of 72104751 in words is "seventy-two million, one hundred four thousand, seven hundred fifty-one".