145461621 has 8 divisors (see below), whose sum is σ = 194006560. Its totient is φ = 96945552.

The previous prime is 145461619. The next prime is 145461629. The reversal of 145461621 is 126164541.

145461621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145461621 - 2¹ = 145461619 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 (145461629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11415 + ... + 20523.

It is an arithmetic number, because the mean of its divisors is an integer number (24250820).

Almost surely, 2^145461621 is an apocalyptic number.

It is an amenable number.

145461621 is a deficient number, since it is larger than the sum of its proper divisors (48544939).

145461621 is an equidigital number, since it uses as much as digits as its factorization.

145461621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14435.

The product of its digits is 5760, while the sum is 30.

The square root of 145461621 is about 12060.7471161616. The cubic root of 145461621 is about 525.9157062029.

The spelling of 145461621 in words is "one hundred forty-five million, four hundred sixty-one thousand, six hundred twenty-one".