145787755 has 4 divisors (see below), whose sum is σ = 174945312. Its totient is φ = 116630200.

The previous prime is 145787753. The next prime is 145787791. The reversal of 145787755 is 557787541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 557787541 = 19 ⋅29357239.

It is not a de Polignac number, because 145787755 - 2¹ = 145787753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145787699 and 145787708.

It is not an unprimeable number, because it can be changed into a prime (145787753) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14578771 + ... + 14578780.

It is an arithmetic number, because the mean of its divisors is an integer number (43736328).

Almost surely, 2^145787755 is an apocalyptic number.

145787755 is a deficient number, since it is larger than the sum of its proper divisors (29157557).

145787755 is an equidigital number, since it uses as much as digits as its factorization.

145787755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29157556.

The product of its digits is 1372000, while the sum is 49.

The square root of 145787755 is about 12074.2600187341. The cubic root of 145787755 is about 526.3084580637.

The spelling of 145787755 in words is "one hundred forty-five million, seven hundred eighty-seven thousand, seven hundred fifty-five".