145437947 has 8 divisors (see below), whose sum is σ = 155463840. Its totient is φ = 135720640.

The previous prime is 145437899. The next prime is 145437959. The reversal of 145437947 is 749734541.

It is a happy number.

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 145437947 - 2¹⁰ = 145436923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145437898 and 145437907.

It is not an unprimeable number, because it can be changed into a prime (145430947) 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, 76172 + ... + 78057.

It is an arithmetic number, because the mean of its divisors is an integer number (19432980).

Almost surely, 2^145437947 is an apocalyptic number.

145437947 is a deficient number, since it is larger than the sum of its proper divisors (10025893).

145437947 is a wasteful number, since it uses less digits than its factorization.

145437947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154293.

The product of its digits is 423360, while the sum is 44.

The square root of 145437947 is about 12059.7656279050. The cubic root of 145437947 is about 525.8871735819.

The spelling of 145437947 in words is "one hundred forty-five million, four hundred thirty-seven thousand, nine hundred forty-seven".