145423523 has 6 divisors (see below), whose sum is σ = 169166196. Its totient is φ = 124648692.

The previous prime is 145423517. The next prime is 145423529. The reversal of 145423523 is 325324541.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (145423517) and next prime (145423529).

It is not a de Polignac number, because 145423523 - 2⁶ = 145423459 is a prime.

It is a super-2 number, since 2×145423523² = 42296002083463058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145423529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1483865 + ... + 1483962.

It is an arithmetic number, because the mean of its divisors is an integer number (28194366).

Almost surely, 2^145423523 is an apocalyptic number.

145423523 is a deficient number, since it is larger than the sum of its proper divisors (23742673).

145423523 is an equidigital number, since it uses as much as digits as its factorization.

145423523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967841 (or 2967834 counting only the distinct ones).

The product of its digits is 14400, while the sum is 29.

The square root of 145423523 is about 12059.1675915048. The cubic root of 145423523 is about 525.8697878227.

The spelling of 145423523 in words is "one hundred forty-five million, four hundred twenty-three thousand, five hundred twenty-three".