145408545 has 12 divisors (see below), whose sum is σ = 252041556. Its totient is φ = 77551200.

The previous prime is 145408541. The next prime is 145408547. The reversal of 145408545 is 545804541.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65270241 + 80138304 = 8079^2 + 8952^2 .

It is not a de Polignac number, because 145408545 - 2² = 145408541 is a prime.

It is a super-2 number, since 2×145408545² = 42287289918034050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145408541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1615606 + ... + 1615695.

It is an arithmetic number, because the mean of its divisors is an integer number (21003463).

Almost surely, 2^145408545 is an apocalyptic number.

145408545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145408545 is a deficient number, since it is larger than the sum of its proper divisors (106633011).

145408545 is a wasteful number, since it uses less digits than its factorization.

145408545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3231312 (or 3231309 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

The square root of 145408545 is about 12058.5465542079. The cubic root of 145408545 is about 525.8517330909.

The spelling of 145408545 in words is "one hundred forty-five million, four hundred eight thousand, five hundred forty-five".