1672555117 has 2 divisors, whose sum is σ = 1672555118. Its totient is φ = 1672555116.

The previous prime is 1672555099. The next prime is 1672555127. The reversal of 1672555117 is 7115552761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1595922601 + 76632516 = 39949^2 + 8754^2 .

It is a cyclic number.

It is not a de Polignac number, because 1672555117 - 2²⁷ = 1538337389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1672555117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1672555127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836277558 + 836277559.

It is an arithmetic number, because the mean of its divisors is an integer number (836277559).

Almost surely, 2^1672555117 is an apocalyptic number.

It is an amenable number.

1672555117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672555117 is an equidigital number, since it uses as much as digits as its factorization.

1672555117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73500, while the sum is 40.

The square root of 1672555117 is about 40896.8839522035. The cubic root of 1672555117 is about 1187.0257662721.

The spelling of 1672555117 in words is "one billion, six hundred seventy-two million, five hundred fifty-five thousand, one hundred seventeen".