101055890 has 16 divisors (see below), whose sum is σ = 195893208. Its totient is φ = 37312896.

The previous prime is 101055887. The next prime is 101055893. The reversal of 101055890 is 98550101.

It is an interprime number because it is at equal distance from previous prime (101055887) and next prime (101055893).

It can be written as a sum of positive squares in 4 ways, for example, as 48594841 + 52461049 = 6971^2 + 7243^2 .

It is not an unprimeable number, because it can be changed into a prime (101055893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388547 + ... + 388806.

Almost surely, 2^101055890 is an apocalyptic number.

101055890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

101055890 is a deficient number, since it is larger than the sum of its proper divisors (94837318).

101055890 is a wasteful number, since it uses less digits than its factorization.

101055890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777373.

The product of its (nonzero) digits is 1800, while the sum is 29.

The square root of 101055890 is about 10052.6558679784. The cubic root of 101055890 is about 465.7868360167.

The spelling of 101055890 in words is "one hundred one million, fifty-five thousand, eight hundred ninety".