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145351 = 191761

145351 has 4 divisors (see below), whose sum is σ = 146304. Its totient is φ = 144400.

The previous prime is 145349. The next prime is 145361. The reversal of 145351 is 153541.

Adding to 145351 its reverse (153541), we get a palindrome (298892).

It can be divided in two parts, 145 and 351, that added together give a triangular number (496 = T31).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 153541 = 532897.

It is a 4-Lehmer number, since φ(145351) divides (145351-1)4.

It is a cyclic number.

It is not a de Polignac number, because 145351 - 21 = 145349 is a prime.

It is a super-2 number, since 2×1453512 = 42253826402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190 + ... + 571.

It is an arithmetic number, because the mean of its divisors is an integer number (36576).

2145351 is an apocalyptic number.

145351 is the 191-st decagonal number.

145351 is the 171-st centered decagonal number.

145351 is a deficient number, since it is larger than the sum of its proper divisors (953).

145351 is an equidigital number, since it uses as much as digits as its factorization.

145351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952.

The product of its digits is 300, while the sum is 19.

The square root of 145351 is about 381.2492622944. The cubic root of 145351 is about 52.5782355851.

The spelling of 145351 in words is "one hundred forty-five thousand, three hundred fifty-one".

Divisors: 1 191 761 145351