145343515 has 4 divisors (see below), whose sum is σ = 174412224. Its totient is φ = 116274808.

The previous prime is 145343503. The next prime is 145343579. The reversal of 145343515 is 515343541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145343515 is a prime.

It is a super-2 number, since 2×145343515² = 42249474705110450, which contains 22 as substring.

It is a Duffinian 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, 14534347 + ... + 14534356.

It is an arithmetic number, because the mean of its divisors is an integer number (43603056).

Almost surely, 2^145343515 is an apocalyptic number.

145343515 is a deficient number, since it is larger than the sum of its proper divisors (29068709).

145343515 is an equidigital number, since it uses as much as digits as its factorization.

145343515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29068708.

The product of its digits is 18000, while the sum is 31.

The square root of 145343515 is about 12055.8498248775. The cubic root of 145343515 is about 525.7733304605.

The spelling of 145343515 in words is "one hundred forty-five million, three hundred forty-three thousand, five hundred fifteen".