145572500 has 30 divisors (see below), whose sum is σ = 318343410. Its totient is φ = 58228000.

The previous prime is 145572499. The next prime is 145572527. The reversal of 145572500 is 5275541.

145572500 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 45212176 + 100360324 = 6724^2 + 10018^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 26615 + ... + 31614.

It is an arithmetic number, because the mean of its divisors is an integer number (10611447).

Almost surely, 2^145572500 is an apocalyptic number.

145572500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145572500 is an abundant number, since it is smaller than the sum of its proper divisors (172770910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145572500 is an equidigital number, since it uses as much as digits as its factorization.

145572500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58253 (or 58236 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 145572500 is about 12065.3429292333. The cubic root of 145572500 is about 526.0492997400.

The spelling of 145572500 in words is "one hundred forty-five million, five hundred seventy-two thousand, five hundred".