145452723 has 24 divisors (see below), whose sum is σ = 214004592. Its totient is φ = 87804288.

The previous prime is 145452721. The next prime is 145452737. The reversal of 145452723 is 327254541.

It is not a de Polignac number, because 145452723 - 2¹ = 145452721 is a prime.

It is a super-2 number, since 2×145452723² = 42312989256229458, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (145452721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24165 + ... + 29577.

It is an arithmetic number, because the mean of its divisors is an integer number (8916858).

Almost surely, 2^145452723 is an apocalyptic number.

145452723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

145452723 is a deficient number, since it is larger than the sum of its proper divisors (68551869).

145452723 is a wasteful number, since it uses less digits than its factorization.

145452723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5495 (or 5482 counting only the distinct ones).

The product of its digits is 33600, while the sum is 33.

The square root of 145452723 is about 12060.3782278998. The cubic root of 145452723 is about 525.9049824273.

The spelling of 145452723 in words is "one hundred forty-five million, four hundred fifty-two thousand, seven hundred twenty-three".