145423574 has 8 divisors (see below), whose sum is σ = 225657360. Its totient is φ = 70204456.

The previous prime is 145423571. The next prime is 145423583. The reversal of 145423574 is 475324541.

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

It is a super-2 number, since 2×145423574² = 42296031749866952, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145423571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1253594 + ... + 1253709.

It is an arithmetic number, because the mean of its divisors is an integer number (28207170).

Almost surely, 2^145423574 is an apocalyptic number.

145423574 is a deficient number, since it is larger than the sum of its proper divisors (80233786).

145423574 is a wasteful number, since it uses less digits than its factorization.

145423574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507334.

The product of its digits is 67200, while the sum is 35.

The square root of 145423574 is about 12059.1697060784. The cubic root of 145423574 is about 525.8698492968.

The spelling of 145423574 in words is "one hundred forty-five million, four hundred twenty-three thousand, five hundred seventy-four".