405150545 has 16 divisors (see below), whose sum is σ = 516592080. Its totient is φ = 305036032.

The previous prime is 405150521. The next prime is 405150553. The reversal of 405150545 is 545051504.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 42667024 + 362483521 = 6532^2 + 19039^2 .

It is not a de Polignac number, because 405150545 - 2²⁰ = 404101969 is a prime.

It is a super-2 number, since 2×405150545² = 328293928227594050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16319 + ... + 32811.

It is an arithmetic number, because the mean of its divisors is an integer number (32287005).

Almost surely, 2^405150545 is an apocalyptic number.

It is an amenable number.

405150545 is a deficient number, since it is larger than the sum of its proper divisors (111441535).

405150545 is an equidigital number, since it uses as much as digits as its factorization.

405150545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16549 (or 16515 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 405150545 is about 20128.3517705748. The cubic root of 405150545 is about 739.9552840036.

The spelling of 405150545 in words is "four hundred five million, one hundred fifty thousand, five hundred forty-five".