545513971 has 2 divisors, whose sum is σ = 545513972. Its totient is φ = 545513970.

The previous prime is 545513951. The next prime is 545513987. The reversal of 545513971 is 179315545.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 545513971 - 2²⁷ = 411296243 is a prime.

It is not a weakly prime, because it can be changed into another prime (545513951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272756985 + 272756986.

It is an arithmetic number, because the mean of its divisors is an integer number (272756986).

Almost surely, 2^545513971 is an apocalyptic number.

545513971 is a deficient number, since it is larger than the sum of its proper divisors (1).

545513971 is an equidigital number, since it uses as much as digits as its factorization.

545513971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94500, while the sum is 40.

The square root of 545513971 is about 23356.2405151172. The cubic root of 545513971 is about 817.0876115242.

The spelling of 545513971 in words is "five hundred forty-five million, five hundred thirteen thousand, nine hundred seventy-one".