100356945 has 16 divisors (see below), whose sum is σ = 172923072. Its totient is φ = 49406400.

The previous prime is 100356941. The next prime is 100356947. The reversal of 100356945 is 549653001.

It is a happy number.

It is not a de Polignac number, because 100356945 - 2² = 100356941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100356941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257131 + ... + 257520.

It is an arithmetic number, because the mean of its divisors is an integer number (10807692).

Almost surely, 2^100356945 is an apocalyptic number.

100356945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100356945 is a deficient number, since it is larger than the sum of its proper divisors (72566127).

100356945 is a wasteful number, since it uses less digits than its factorization.

100356945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514672.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 100356945 is about 10017.8313521440. The cubic root of 100356945 is about 464.7104915437.

The spelling of 100356945 in words is "one hundred million, three hundred fifty-six thousand, nine hundred forty-five".