545401511 has 4 divisors (see below), whose sum is σ = 546495000. Its totient is φ = 544308024.

The previous prime is 545401501. The next prime is 545401529. The reversal of 545401511 is 115104545.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 545401511 - 2¹⁸ = 545139367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545401501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545996 + ... + 546993.

It is an arithmetic number, because the mean of its divisors is an integer number (136623750).

Almost surely, 2^545401511 is an apocalyptic number.

545401511 is a deficient number, since it is larger than the sum of its proper divisors (1093489).

545401511 is a wasteful number, since it uses less digits than its factorization.

545401511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093488.

The product of its (nonzero) digits is 2000, while the sum is 26.

The square root of 545401511 is about 23353.8328974068. The cubic root of 545401511 is about 817.0314589825.

The spelling of 545401511 in words is "five hundred forty-five million, four hundred one thousand, five hundred eleven".