72174929 has 2 divisors, whose sum is σ = 72174930. Its totient is φ = 72174928.

The previous prime is 72174919. The next prime is 72174937. The reversal of 72174929 is 92947127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53684929 + 18490000 = 7327^2 + 4300^2 .

It is a cyclic number.

It is not a de Polignac number, because 72174929 - 2²⁰ = 71126353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (72174919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36087464 + 36087465.

It is an arithmetic number, because the mean of its divisors is an integer number (36087465).

Almost surely, 2^72174929 is an apocalyptic number.

It is an amenable number.

72174929 is a deficient number, since it is larger than the sum of its proper divisors (1).

72174929 is an equidigital number, since it uses as much as digits as its factorization.

72174929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 41.

The square root of 72174929 is about 8495.5829111368. The cubic root of 72174929 is about 416.3534059994.

The spelling of 72174929 in words is "seventy-two million, one hundred seventy-four thousand, nine hundred twenty-nine".