145199055 has 8 divisors (see below), whose sum is σ = 232318512. Its totient is φ = 77439488.

The previous prime is 145199029. The next prime is 145199099. The reversal of 145199055 is 550991541.

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

It is a cyclic number.

It is not a de Polignac number, because 145199055 - 2⁷ = 145198927 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4839954 + ... + 4839983.

It is an arithmetic number, because the mean of its divisors is an integer number (29039814).

Almost surely, 2^145199055 is an apocalyptic number.

145199055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145199055 is a deficient number, since it is larger than the sum of its proper divisors (87119457).

145199055 is an equidigital number, since it uses as much as digits as its factorization.

145199055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9679945.

The product of its (nonzero) digits is 40500, while the sum is 39.

The square root of 145199055 is about 12049.8570530940. The cubic root of 145199055 is about 525.5990802986.

The spelling of 145199055 in words is "one hundred forty-five million, one hundred ninety-nine thousand, fifty-five".