72119501 has 2 divisors, whose sum is σ = 72119502. Its totient is φ = 72119500.

The previous prime is 72119483. The next prime is 72119503. The reversal of 72119501 is 10591127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56987401 + 15132100 = 7549^2 + 3890^2 .

It is an emirp because it is prime and its reverse (10591127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72119501 - 2²⁶ = 5010637 is a prime.

Together with 72119503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72119503) 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, 36059750 + 36059751.

It is an arithmetic number, because the mean of its divisors is an integer number (36059751).

Almost surely, 2^72119501 is an apocalyptic number.

It is an amenable number.

72119501 is a deficient number, since it is larger than the sum of its proper divisors (1).

72119501 is an equidigital number, since it uses as much as digits as its factorization.

72119501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 72119501 is about 8492.3201187897. The cubic root of 72119501 is about 416.2467967421.

The spelling of 72119501 in words is "seventy-two million, one hundred nineteen thousand, five hundred one".