100959551 has 24 divisors (see below), whose sum is σ = 129795840. Its totient is φ = 77641200.

The previous prime is 100959533. The next prime is 100959557. The reversal of 100959551 is 155959001.

It is a happy number.

It is not a de Polignac number, because 100959551 - 2²² = 96765247 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 (100959557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41396 + ... + 43766.

It is an arithmetic number, because the mean of its divisors is an integer number (5408160).

Almost surely, 2^100959551 is an apocalyptic number.

100959551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100959551 is a deficient number, since it is larger than the sum of its proper divisors (28836289).

100959551 is a wasteful number, since it uses less digits than its factorization.

100959551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475 (or 2468 counting only the distinct ones).

The product of its (nonzero) digits is 10125, while the sum is 35.

The square root of 100959551 is about 10047.8630066298. The cubic root of 100959551 is about 465.6387737078.

The spelling of 100959551 in words is "one hundred million, nine hundred fifty-nine thousand, five hundred fifty-one".