100380501 has 12 divisors (see below), whose sum is σ = 156147628. Its totient is φ = 61772544.

The previous prime is 100380491. The next prime is 100380503. The reversal of 100380501 is 105083001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 50041476 + 50339025 = 7074^2 + 7095^2 .

It is not a de Polignac number, because 100380501 - 2⁶ = 100380437 is a prime.

It is a super-2 number, since 2×100380501² = 20152489962022002, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100380503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 428860 + ... + 429093.

Almost surely, 2^100380501 is an apocalyptic number.

It is an amenable number.

100380501 is a deficient number, since it is larger than the sum of its proper divisors (55767127).

100380501 is a wasteful number, since it uses less digits than its factorization.

100380501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857972 (or 857969 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 100380501 is about 10019.0069867228. The cubic root of 100380501 is about 464.7468479845.

The spelling of 100380501 in words is "one hundred million, three hundred eighty thousand, five hundred one".