147472621 has 4 divisors (see below), whose sum is σ = 147539392. Its totient is φ = 147405852.

The previous prime is 147472607. The next prime is 147472631. The reversal of 147472621 is 126274741.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 126274741 = 19 ⋅6646039.

It is a cyclic number.

It is not a de Polignac number, because 147472621 - 2⁹ = 147472109 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 (147472631) 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, 29955 + ... + 34528.

It is an arithmetic number, because the mean of its divisors is an integer number (36884848).

Almost surely, 2^147472621 is an apocalyptic number.

It is an amenable number.

147472621 is a deficient number, since it is larger than the sum of its proper divisors (66771).

147472621 is an equidigital number, since it uses as much as digits as its factorization.

147472621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66770.

The product of its digits is 18816, while the sum is 34.

The square root of 147472621 is about 12143.8305735876. The cubic root of 147472621 is about 528.3282090965.

The spelling of 147472621 in words is "one hundred forty-seven million, four hundred seventy-two thousand, six hundred twenty-one".