145451555 has 16 divisors (see below), whose sum is σ = 184703520. Its totient is φ = 109651968.

The previous prime is 145451549. The next prime is 145451569. The reversal of 145451555 is 555154541.

It is a cyclic number.

It is not a de Polignac number, because 145451555 - 2⁴ = 145451539 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14369 + ... + 22301.

It is an arithmetic number, because the mean of its divisors is an integer number (11543970).

Almost surely, 2^145451555 is an apocalyptic number.

145451555 is a deficient number, since it is larger than the sum of its proper divisors (39251965).

145451555 is a wasteful number, since it uses less digits than its factorization.

145451555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8150.

The product of its digits is 50000, while the sum is 35.

The square root of 145451555 is about 12060.3298047773. The cubic root of 145451555 is about 525.9035747335.

The spelling of 145451555 in words is "one hundred forty-five million, four hundred fifty-one thousand, five hundred fifty-five".