145371572 has 12 divisors (see below), whose sum is σ = 257023620. Its totient is φ = 71936256.

The previous prime is 145371509. The next prime is 145371581. The reversal of 145371572 is 275173541.

It can be written as a sum of positive squares in 2 ways, for example, as 86787856 + 58583716 = 9316^2 + 7654^2 .

It is a super-2 number, since 2×145371572² = 42265787891502368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186947 + ... + 187722.

It is an arithmetic number, because the mean of its divisors is an integer number (21418635).

Almost surely, 2^145371572 is an apocalyptic number.

It is an amenable number.

145371572 is a deficient number, since it is larger than the sum of its proper divisors (111652048).

145371572 is a wasteful number, since it uses less digits than its factorization.

145371572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374770 (or 374768 counting only the distinct ones).

The product of its digits is 29400, while the sum is 35.

The square root of 145371572 is about 12057.0133947010. The cubic root of 145371572 is about 525.8071599098.

The spelling of 145371572 in words is "one hundred forty-five million, three hundred seventy-one thousand, five hundred seventy-two".