145210505 has 32 divisors (see below), whose sum is σ = 196283520. Its totient is φ = 102228480.

The previous prime is 145210501. The next prime is 145210553. The reversal of 145210505 is 505012541.

It is a happy number.

145210505 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 145210505 - 2² = 145210501 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (145210501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236579 + ... + 237191.

It is an arithmetic number, because the mean of its divisors is an integer number (6133860).

Almost surely, 2^145210505 is an apocalyptic number.

It is an amenable number.

145210505 is a deficient number, since it is larger than the sum of its proper divisors (51073015).

145210505 is a wasteful number, since it uses less digits than its factorization.

145210505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 145210505 is about 12050.3321530985. The cubic root of 145210505 is about 525.6128957037.

The spelling of 145210505 in words is "one hundred forty-five million, two hundred ten thousand, five hundred five".