57172033 has 2 divisors, whose sum is σ = 57172034. Its totient is φ = 57172032.

The previous prime is 57172009. The next prime is 57172061. The reversal of 57172033 is 33027175.

It is an a-pointer prime, because the next prime (57172061) can be obtained adding 57172033 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43864129 + 13307904 = 6623^2 + 3648^2 .

It is a cyclic number.

It is not a de Polignac number, because 57172033 - 2²¹ = 55074881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57171992 and 57172010.

It is not a weakly prime, because it can be changed into another prime (52172033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28586016 + 28586017.

It is an arithmetic number, because the mean of its divisors is an integer number (28586017).

Almost surely, 2^57172033 is an apocalyptic number.

It is an amenable number.

57172033 is a deficient number, since it is larger than the sum of its proper divisors (1).

57172033 is an equidigital number, since it uses as much as digits as its factorization.

57172033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 57172033 is about 7561.2190154763. The cubic root of 57172033 is about 385.2368992335.

It can be divided in two parts, 5717 and 2033, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 57172033 in words is "fifty-seven million, one hundred seventy-two thousand, thirty-three".