511242105 has 32 divisors (see below), whose sum is σ = 944846208. Its totient is φ = 233292800.

The previous prime is 511242031. The next prime is 511242107. The reversal of 511242105 is 501242115.

It is not a de Polignac number, because 511242105 - 2¹¹ = 511240057 is a prime.

It is a super-2 number, since 2×511242105² = 522736979849662050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (511242107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88326 + ... + 93935.

It is an arithmetic number, because the mean of its divisors is an integer number (29526444).

Almost surely, 2^511242105 is an apocalyptic number.

511242105 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

511242105 is a deficient number, since it is larger than the sum of its proper divisors (433604103).

511242105 is a wasteful number, since it uses less digits than its factorization.

511242105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182297.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 511242105 is about 22610.6635240985. The cubic root of 511242105 is about 799.6050680889.

The spelling of 511242105 in words is "five hundred eleven million, two hundred forty-two thousand, one hundred five".