100049251 has 4 divisors (see below), whose sum is σ = 100100872. Its totient is φ = 99997632.

The previous prime is 100049227. The next prime is 100049293. The reversal of 100049251 is 152940001.

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

It is a cyclic number.

It is not a de Polignac number, because 100049251 - 2⁵ = 100049219 is a prime.

It is a super-2 number, since 2×100049251² = 20019705251322002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100049051) 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, 22785 + ... + 26818.

It is an arithmetic number, because the mean of its divisors is an integer number (25025218).

Almost surely, 2^100049251 is an apocalyptic number.

100049251 is a deficient number, since it is larger than the sum of its proper divisors (51621).

100049251 is an equidigital number, since it uses as much as digits as its factorization.

100049251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51620.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 100049251 is about 10002.4622468670. The cubic root of 100049251 is about 464.2350718187.

Adding to 100049251 its reverse (152940001), we get a palindrome (252989252).

The spelling of 100049251 in words is "one hundred million, forty-nine thousand, two hundred fifty-one".