145621829 has 4 divisors (see below), whose sum is σ = 146493984. Its totient is φ = 144749676.

The previous prime is 145621799. The next prime is 145621831. The reversal of 145621829 is 928126541.

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 a de Polignac number, because none of the positive numbers 2^k-145621829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145621792 and 145621801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145627829) 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, 435827 + ... + 436160.

It is an arithmetic number, because the mean of its divisors is an integer number (36623496).

Almost surely, 2^145621829 is an apocalyptic number.

It is an amenable number.

145621829 is a deficient number, since it is larger than the sum of its proper divisors (872155).

145621829 is an equidigital number, since it uses as much as digits as its factorization.

145621829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872154.

The product of its digits is 34560, while the sum is 38.

The square root of 145621829 is about 12067.3869996781. The cubic root of 145621829 is about 526.1087124161.

The spelling of 145621829 in words is "one hundred forty-five million, six hundred twenty-one thousand, eight hundred twenty-nine".