100155465 has 24 divisors (see below), whose sum is σ = 173871360. Its totient is φ = 53333664.

The previous prime is 100155457. The next prime is 100155469. The reversal of 100155465 is 564551001.

It is a happy number.

100155465 is a `hidden beast` number, since 100 + 1 + 554 + 6 + 5 = 666.

It is not a de Polignac number, because 100155465 - 2³ = 100155457 is a prime.

It is a super-2 number, since 2×100155465² = 20062234338732450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100155469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37546 + ... + 40124.

It is an arithmetic number, because the mean of its divisors is an integer number (7244640).

Almost surely, 2^100155465 is an apocalyptic number.

100155465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100155465 is a deficient number, since it is larger than the sum of its proper divisors (73715895).

100155465 is a wasteful number, since it uses less digits than its factorization.

100155465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453 (or 3450 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 100155465 is about 10007.7702311754. The cubic root of 100155465 is about 464.3992936890.

The spelling of 100155465 in words is "one hundred million, one hundred fifty-five thousand, four hundred sixty-five".