99154481 has 4 divisors (see below), whose sum is σ = 99587700. Its totient is φ = 98721264.

The previous prime is 99154477. The next prime is 99154501. The reversal of 99154481 is 18445199.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18445199 = 2897 ⋅6367.

It can be written as a sum of positive squares in 2 ways, for example, as 97219600 + 1934881 = 9860^2 + 1391^2 .

It is a cyclic number.

It is not a de Polignac number, because 99154481 - 2² = 99154477 is a prime.

It is a super-2 number, since 2×99154481² = 19663222204758722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99154381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216266 + ... + 216723.

It is an arithmetic number, because the mean of its divisors is an integer number (24896925).

Almost surely, 2^99154481 is an apocalyptic number.

It is an amenable number.

99154481 is a deficient number, since it is larger than the sum of its proper divisors (433219).

99154481 is a wasteful number, since it uses less digits than its factorization.

99154481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433218.

The product of its digits is 51840, while the sum is 41.

The square root of 99154481 is about 9957.6343074045. The cubic root of 99154481 is about 462.8469951134.

The spelling of 99154481 in words is "ninety-nine million, one hundred fifty-four thousand, four hundred eighty-one".