145453501 has 4 divisors (see below), whose sum is σ = 147087900. Its totient is φ = 143819104.

The previous prime is 145453499. The next prime is 145453507. The reversal of 145453501 is 105354541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23328900 + 122124601 = 4830^2 + 11051^2 .

It is a cyclic number.

It is not a de Polignac number, because 145453501 - 2¹ = 145453499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145453501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145453507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 817066 + ... + 817243.

It is an arithmetic number, because the mean of its divisors is an integer number (36771975).

Almost surely, 2^145453501 is an apocalyptic number.

It is an amenable number.

145453501 is a deficient number, since it is larger than the sum of its proper divisors (1634399).

145453501 is an equidigital number, since it uses as much as digits as its factorization.

145453501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634398.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 145453501 is about 12060.4104822348. The cubic root of 145453501 is about 525.9059200821.

The spelling of 145453501 in words is "one hundred forty-five million, four hundred fifty-three thousand, five hundred one".