101056019 has 4 divisors (see below), whose sum is σ = 101331744. Its totient is φ = 100780296.

The previous prime is 101055979. The next prime is 101056027. The reversal of 101056019 is 910650101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101056019 is a prime.

It is a super-2 number, since 2×101056019² = 20424637952256722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101055985 and 101056003.

It is not an unprimeable number, because it can be changed into a prime (101056819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137312 + ... + 138045.

It is an arithmetic number, because the mean of its divisors is an integer number (25332936).

Almost surely, 2^101056019 is an apocalyptic number.

101056019 is a deficient number, since it is larger than the sum of its proper divisors (275725).

101056019 is an equidigital number, since it uses as much as digits as its factorization.

101056019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275724.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 101056019 is about 10052.6622841912. The cubic root of 101056019 is about 465.7870342122.

The spelling of 101056019 in words is "one hundred one million, fifty-six thousand, nineteen".