100261551 has 8 divisors (see below), whose sum is σ = 143965360. Its totient is φ = 61699392.

The previous prime is 100261549. The next prime is 100261627. The reversal of 100261551 is 155162001.

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

It is not a de Polignac number, because 100261551 - 2¹ = 100261549 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 (100261151) 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, 1285366 + ... + 1285443.

It is an arithmetic number, because the mean of its divisors is an integer number (17995670).

Almost surely, 2^100261551 is an apocalyptic number.

100261551 is a deficient number, since it is larger than the sum of its proper divisors (43703809).

100261551 is a wasteful number, since it uses less digits than its factorization.

100261551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570825.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 100261551 is about 10013.0690100488. The cubic root of 100261551 is about 464.5632017999.

The spelling of 100261551 in words is "one hundred million, two hundred sixty-one thousand, five hundred fifty-one".