545425881 has 64 divisors (see below), whose sum is σ = 1010257920. Its totient is φ = 252483840.

The previous prime is 545425879. The next prime is 545425883. The reversal of 545425881 is 188524545.

It is an interprime number because it is at equal distance from previous prime (545425879) and next prime (545425883).

It is not a de Polignac number, because 545425881 - 2¹ = 545425879 is a prime.

It is a super-2 number, since 2×545425881² = 594978783329252322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (545425883) 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 63 ways as a sum of consecutive naturals, for example, 83956 + ... + 90218.

It is an arithmetic number, because the mean of its divisors is an integer number (15785280).

Almost surely, 2^545425881 is an apocalyptic number.

It is an amenable number.

545425881 is a deficient number, since it is larger than the sum of its proper divisors (464832039).

545425881 is a wasteful number, since it uses less digits than its factorization.

545425881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6326.

The product of its digits is 256000, while the sum is 42.

The square root of 545425881 is about 23354.3546474742. The cubic root of 545425881 is about 817.0436278524.

It can be divided in two parts, 545 and 425881, that added together give a triangular number (426426 = T₉₂₃).

The spelling of 545425881 in words is "five hundred forty-five million, four hundred twenty-five thousand, eight hundred eighty-one".