1550402345 has 16 divisors (see below), whose sum is σ = 1869962112. Its totient is φ = 1234020480.

The previous prime is 1550402333. The next prime is 1550402351. The reversal of 1550402345 is 5432040551.

It is not a de Polignac number, because 1550402345 - 2²⁴ = 1533625129 is a prime.

It is a Duffinian number.

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, 1576724 + ... + 1577706.

It is an arithmetic number, because the mean of its divisors is an integer number (116872632).

Almost surely, 2^1550402345 is an apocalyptic number.

It is an amenable number.

1550402345 is a deficient number, since it is larger than the sum of its proper divisors (319559767).

1550402345 is an equidigital number, since it uses as much as digits as its factorization.

1550402345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 1550402345 is about 39375.1488251156. The cubic root of 1550402345 is about 1157.3946544421.

Adding to 1550402345 its reverse (5432040551), we get a palindrome (6982442896).

The spelling of 1550402345 in words is "one billion, five hundred fifty million, four hundred two thousand, three hundred forty-five".