145616751 has 16 divisors (see below), whose sum is σ = 246547200. Its totient is φ = 83209464.

The previous prime is 145616693. The next prime is 145616761. The reversal of 145616751 is 157616541.

It is a happy number.

It is not a de Polignac number, because 145616751 - 2¹⁵ = 145583983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145616761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385041 + ... + 385418.

It is an arithmetic number, because the mean of its divisors is an integer number (15409200).

Almost surely, 2^145616751 is an apocalyptic number.

145616751 is a deficient number, since it is larger than the sum of its proper divisors (100930449).

145616751 is an equidigital number, since it uses as much as digits as its factorization.

145616751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770475 (or 770469 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 145616751 is about 12067.1765960394. The cubic root of 145616751 is about 526.1025970072.

It can be divided in two parts, 14561 and 6751, that added together give a palindrome (21312).

The spelling of 145616751 in words is "one hundred forty-five million, six hundred sixteen thousand, seven hundred fifty-one".