145811607 has 4 divisors (see below), whose sum is σ = 194415480. Its totient is φ = 97207736.

The previous prime is 145811591. The next prime is 145811629. The reversal of 145811607 is 706118541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145811607 - 2⁴ = 145811591 is a prime.

It is a super-2 number, since 2×145811607² = 42522049471844898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145811647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24301932 + ... + 24301937.

It is an arithmetic number, because the mean of its divisors is an integer number (48603870).

Almost surely, 2^145811607 is an apocalyptic number.

145811607 is a deficient number, since it is larger than the sum of its proper divisors (48603873).

145811607 is an equidigital number, since it uses as much as digits as its factorization.

145811607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48603872.

The product of its (nonzero) digits is 6720, while the sum is 33.

The square root of 145811607 is about 12075.2476993228. The cubic root of 145811607 is about 526.3371592048.

The spelling of 145811607 in words is "one hundred forty-five million, eight hundred eleven thousand, six hundred seven".