145738751 has 4 divisors (see below), whose sum is σ = 146392512. Its totient is φ = 145084992.

The previous prime is 145738727. The next prime is 145738753. The reversal of 145738751 is 157837541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 157837541 = 19 ⋅8307239.

It is a cyclic number.

It is not a de Polignac number, because 145738751 - 2⁶ = 145738687 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145738699 and 145738708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145738753) 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, 326546 + ... + 326991.

It is an arithmetic number, because the mean of its divisors is an integer number (36598128).

Almost surely, 2^145738751 is an apocalyptic number.

145738751 is a deficient number, since it is larger than the sum of its proper divisors (653761).

145738751 is an equidigital number, since it uses as much as digits as its factorization.

145738751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653760.

The product of its digits is 117600, while the sum is 41.

The square root of 145738751 is about 12072.2305726821. The cubic root of 145738751 is about 526.2494816657.

The spelling of 145738751 in words is "one hundred forty-five million, seven hundred thirty-eight thousand, seven hundred fifty-one".