53442920173 has 2 divisors, whose sum is σ = 53442920174. Its totient is φ = 53442920172.

The previous prime is 53442920147. The next prime is 53442920189. The reversal of 53442920173 is 37102924435.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42771616969 + 10671303204 = 206813^2 + 103302^2 .

It is a cyclic number.

It is not a de Polignac number, because 53442920173 - 2²¹ = 53440823021 is a prime.

It is a super-2 number, since 2×53442920173² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53442920143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26721460086 + 26721460087.

It is an arithmetic number, because the mean of its divisors is an integer number (26721460087).

Almost surely, 2^53442920173 is an apocalyptic number.

It is an amenable number.

53442920173 is a deficient number, since it is larger than the sum of its proper divisors (1).

53442920173 is an equidigital number, since it uses as much as digits as its factorization.

53442920173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 53442920173 in words is "fifty-three billion, four hundred forty-two million, nine hundred twenty thousand, one hundred seventy-three".