100423551 has 8 divisors (see below), whose sum is σ = 134533504. Its totient is φ = 66631320.

The previous prime is 100423541. The next prime is 100423567. The reversal of 100423551 is 155324001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100423551 - 2⁷ = 100423423 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 (100423511) 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, 78691 + ... + 79956.

It is an arithmetic number, because the mean of its divisors is an integer number (16816688).

Almost surely, 2^100423551 is an apocalyptic number.

100423551 is a deficient number, since it is larger than the sum of its proper divisors (34109953).

100423551 is a wasteful number, since it uses less digits than its factorization.

100423551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158861.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 100423551 is about 10021.1551729329. The cubic root of 100423551 is about 464.8132768630.

Adding to 100423551 its reverse (155324001), we get a palindrome (255747552).

The spelling of 100423551 in words is "one hundred million, four hundred twenty-three thousand, five hundred fifty-one".