145473737 has 4 divisors (see below), whose sum is σ = 145777920. Its totient is φ = 145169556.

The previous prime is 145473733. The next prime is 145473761. The reversal of 145473737 is 737374541.

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 145473737 - 2² = 145473733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145473694 and 145473703.

It is not an unprimeable number, because it can be changed into a prime (145473733) 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, 151373 + ... + 152330.

It is an arithmetic number, because the mean of its divisors is an integer number (36444480).

Almost surely, 2^145473737 is an apocalyptic number.

It is an amenable number.

145473737 is a deficient number, since it is larger than the sum of its proper divisors (304183).

145473737 is an equidigital number, since it uses as much as digits as its factorization.

145473737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304182.

The product of its digits is 246960, while the sum is 41.

The square root of 145473737 is about 12061.2493963105. The cubic root of 145473737 is about 525.9303075751.

The spelling of 145473737 in words is "one hundred forty-five million, four hundred seventy-three thousand, seven hundred thirty-seven".