145402315 has 4 divisors (see below), whose sum is σ = 174482784. Its totient is φ = 116321848.

The previous prime is 145402291. The next prime is 145402331. The reversal of 145402315 is 513204541.

It is a happy number.

145402315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 145402315 - 2⁹ = 145401803 is a prime.

It is a super-2 number, since 2×145402315² = 42283666414718450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145402315.

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, 14540227 + ... + 14540236.

It is an arithmetic number, because the mean of its divisors is an integer number (43620696).

Almost surely, 2^145402315 is an apocalyptic number.

145402315 is a deficient number, since it is larger than the sum of its proper divisors (29080469).

145402315 is an equidigital number, since it uses as much as digits as its factorization.

145402315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29080468.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 145402315 is about 12058.2882284344. The cubic root of 145402315 is about 525.8442229796.

Adding to 145402315 its reverse (513204541), we get a palindrome (658606856).

The spelling of 145402315 in words is "one hundred forty-five million, four hundred two thousand, three hundred fifteen".