52391473 has 2 divisors, whose sum is σ = 52391474. Its totient is φ = 52391472.

The previous prime is 52391461. The next prime is 52391477. The reversal of 52391473 is 37419325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48902049 + 3489424 = 6993^2 + 1868^2 .

It is a cyclic number.

It is not a de Polignac number, because 52391473 - 2¹⁷ = 52260401 is a prime.

It is not a weakly prime, because it can be changed into another prime (52391477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26195736 + 26195737.

It is an arithmetic number, because the mean of its divisors is an integer number (26195737).

Almost surely, 2^52391473 is an apocalyptic number.

It is an amenable number.

52391473 is a deficient number, since it is larger than the sum of its proper divisors (1).

52391473 is an equidigital number, since it uses as much as digits as its factorization.

52391473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 34.

The square root of 52391473 is about 7238.1954242753. The cubic root of 52391473 is about 374.1854271299.

The spelling of 52391473 in words is "fifty-two million, three hundred ninety-one thousand, four hundred seventy-three".