145451655 has 24 divisors (see below), whose sum is σ = 263079648. Its totient is φ = 74200896.

The previous prime is 145451639. The next prime is 145451689. The reversal of 145451655 is 556154541.

145451655 is a `hidden beast` number, since 145 + 451 + 65 + 5 = 666.

145451655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145451655 - 2⁴ = 145451639 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69232 + ... + 71301.

It is an arithmetic number, because the mean of its divisors is an integer number (10961652).

Almost surely, 2^145451655 is an apocalyptic number.

145451655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145451655 is a deficient number, since it is larger than the sum of its proper divisors (117627993).

145451655 is a wasteful number, since it uses less digits than its factorization.

145451655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140567 (or 140564 counting only the distinct ones).

The product of its digits is 60000, while the sum is 36.

The square root of 145451655 is about 12060.3339506002. Note that the first 3 decimals coincide. The cubic root of 145451655 is about 525.9036952555.

The spelling of 145451655 in words is "one hundred forty-five million, four hundred fifty-one thousand, six hundred fifty-five".