145461461 has 4 divisors (see below), whose sum is σ = 145560000. Its totient is φ = 145362924.

The previous prime is 145461457. The next prime is 145461527. The reversal of 145461461 is 164164541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145461461 - 2² = 145461457 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145461431) 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, 47021 + ... + 50018.

It is an arithmetic number, because the mean of its divisors is an integer number (36390000).

Almost surely, 2^145461461 is an apocalyptic number.

It is an amenable number.

145461461 is a deficient number, since it is larger than the sum of its proper divisors (98539).

145461461 is an equidigital number, since it uses as much as digits as its factorization.

145461461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98538.

The product of its digits is 11520, while the sum is 32.

The square root of 145461461 is about 12060.7404830715. The cubic root of 145461461 is about 525.9155133765.

The spelling of 145461461 in words is "one hundred forty-five million, four hundred sixty-one thousand, four hundred sixty-one".