539881971 has 16 divisors (see below), whose sum is σ = 771840000. Its totient is φ = 334459008.

The previous prime is 539881963. The next prime is 539881987. The reversal of 539881971 is 179188935.

It is not a de Polignac number, because 539881971 - 2³ = 539881963 is a prime.

It is a super-2 number, since 2×539881971² = 582945085221689682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (539881961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62971 + ... + 71028.

It is an arithmetic number, because the mean of its divisors is an integer number (48240000).

Almost surely, 2^539881971 is an apocalyptic number.

539881971 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

539881971 is a deficient number, since it is larger than the sum of its proper divisors (231958029).

539881971 is a wasteful number, since it uses less digits than its factorization.

539881971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134098.

The product of its digits is 544320, while the sum is 51.

The square root of 539881971 is about 23235.3603587291. The cubic root of 539881971 is about 814.2659510263.

The spelling of 539881971 in words is "five hundred thirty-nine million, eight hundred eighty-one thousand, nine hundred seventy-one".