145415515 has 8 divisors (see below), whose sum is σ = 199427040. Its totient is φ = 99713472.

The previous prime is 145415497. The next prime is 145415563. The reversal of 145415515 is 515514541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145415515 - 2⁹ = 145415003 is a prime.

It is a super-2 number, since 2×145415515² = 42291344005430450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2077330 + ... + 2077399.

It is an arithmetic number, because the mean of its divisors is an integer number (24928380).

Almost surely, 2^145415515 is an apocalyptic number.

145415515 is a deficient number, since it is larger than the sum of its proper divisors (54011525).

145415515 is an equidigital number, since it uses as much as digits as its factorization.

145415515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154741.

The product of its digits is 10000, while the sum is 31.

The square root of 145415515 is about 12058.8355573828. The cubic root of 145415515 is about 525.8601349997.

The spelling of 145415515 in words is "one hundred forty-five million, four hundred fifteen thousand, five hundred fifteen".