145152415 has 4 divisors (see below), whose sum is σ = 174182904. Its totient is φ = 116121928.

The previous prime is 145152401. The next prime is 145152421. The reversal of 145152415 is 514251541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 514251541 = 8837 ⋅58193.

It is a cyclic number.

It is not a de Polignac number, because 145152415 - 2¹⁷ = 145021343 is a prime.

It is a Duffinian number.

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, 14515237 + ... + 14515246.

It is an arithmetic number, because the mean of its divisors is an integer number (43545726).

Almost surely, 2^145152415 is an apocalyptic number.

145152415 is a deficient number, since it is larger than the sum of its proper divisors (29030489).

145152415 is an equidigital number, since it uses as much as digits as its factorization.

145152415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29030488.

The product of its digits is 4000, while the sum is 28.

The square root of 145152415 is about 12047.9216049906. The cubic root of 145152415 is about 525.5427976405.

The spelling of 145152415 in words is "one hundred forty-five million, one hundred fifty-two thousand, four hundred fifteen".