100424551 has 4 divisors (see below), whose sum is σ = 100474192. Its totient is φ = 100374912.

The previous prime is 100424521. The next prime is 100424561. The reversal of 100424551 is 155424001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155424001 = 7349 ⋅21149.

It is a cyclic number.

It is not a de Polignac number, because 100424551 - 2²¹ = 98327399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100424501) 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, 21651 + ... + 25876.

It is an arithmetic number, because the mean of its divisors is an integer number (25118548).

Almost surely, 2^100424551 is an apocalyptic number.

100424551 is a deficient number, since it is larger than the sum of its proper divisors (49641).

100424551 is an equidigital number, since it uses as much as digits as its factorization.

100424551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49640.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 100424551 is about 10021.2050672561. The cubic root of 100424551 is about 464.8148197007.

Adding to 100424551 its reverse (155424001), we get a palindrome (255848552).

The spelling of 100424551 in words is "one hundred million, four hundred twenty-four thousand, five hundred fifty-one".