145431051 has 4 divisors (see below), whose sum is σ = 193908072. Its totient is φ = 96954032.

The previous prime is 145431049. The next prime is 145431061. The reversal of 145431051 is 150134541.

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 145431051 - 2¹ = 145431049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145431061) 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, 24238506 + ... + 24238511.

It is an arithmetic number, because the mean of its divisors is an integer number (48477018).

Almost surely, 2^145431051 is an apocalyptic number.

145431051 is a deficient number, since it is larger than the sum of its proper divisors (48477021).

145431051 is an equidigital number, since it uses as much as digits as its factorization.

145431051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48477020.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 145431051 is about 12059.4797151453. The cubic root of 145431051 is about 525.8788617317.

Adding to 145431051 its reverse (150134541), we get a palindrome (295565592).

The spelling of 145431051 in words is "one hundred forty-five million, four hundred thirty-one thousand, fifty-one".