147374521 has 4 divisors (see below), whose sum is σ = 168428032. Its totient is φ = 126321012.

The previous prime is 147374519. The next prime is 147374533. The reversal of 147374521 is 125473741.

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: 125473741 = 853 ⋅147097.

It is a cyclic number.

It is not a de Polignac number, because 147374521 - 2¹ = 147374519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147374021) 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, 10526745 + ... + 10526758.

It is an arithmetic number, because the mean of its divisors is an integer number (42107008).

Almost surely, 2^147374521 is an apocalyptic number.

It is an amenable number.

147374521 is a deficient number, since it is larger than the sum of its proper divisors (21053511).

147374521 is an equidigital number, since it uses as much as digits as its factorization.

147374521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21053510.

The product of its digits is 23520, while the sum is 34.

The square root of 147374521 is about 12139.7908136837. The cubic root of 147374521 is about 528.2110336878.

The spelling of 147374521 in words is "one hundred forty-seven million, three hundred seventy-four thousand, five hundred twenty-one".