145156447 has 8 divisors (see below), whose sum is σ = 154949760. Its totient is φ = 135578520.

The previous prime is 145156399. The next prime is 145156457. The reversal of 145156447 is 744651541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145156447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145156457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52453 + ... + 55150.

It is an arithmetic number, because the mean of its divisors is an integer number (19368720).

Almost surely, 2^145156447 is an apocalyptic number.

145156447 is a deficient number, since it is larger than the sum of its proper divisors (9793313).

145156447 is a wasteful number, since it uses less digits than its factorization.

145156447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107693.

The product of its digits is 67200, while the sum is 37.

The square root of 145156447 is about 12048.0889355947. The cubic root of 145156447 is about 525.5476637185.

The spelling of 145156447 in words is "one hundred forty-five million, one hundred fifty-six thousand, four hundred forty-seven".