145291415 has 16 divisors (see below), whose sum is σ = 180092640. Its totient is φ = 112440960.

The previous prime is 145291409. The next prime is 145291439. The reversal of 145291415 is 514192541.

145291415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145291415 - 2²⁶ = 78182551 is a prime.

It is a super-2 number, since 2×145291415² = 42219190545404450, 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 15 ways as a sum of consecutive naturals, for example, 31316 + ... + 35654.

It is an arithmetic number, because the mean of its divisors is an integer number (11255790).

Almost surely, 2^145291415 is an apocalyptic number.

145291415 is a deficient number, since it is larger than the sum of its proper divisors (34801225).

145291415 is a wasteful number, since it uses less digits than its factorization.

145291415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4562.

The product of its digits is 7200, while the sum is 32.

The square root of 145291415 is about 12053.6888544545. The cubic root of 145291415 is about 525.7104998525.

The spelling of 145291415 in words is "one hundred forty-five million, two hundred ninety-one thousand, four hundred fifteen".