1550400424 has 8 divisors (see below), whose sum is σ = 2907000810. Its totient is φ = 775200208.

The previous prime is 1550400403. The next prime is 1550400431. The reversal of 1550400424 is 4240040551.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 828403524 + 721996900 = 28782^2 + 26870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96900019 + ... + 96900034.

Almost surely, 2^1550400424 is an apocalyptic number.

It is an amenable number.

1550400424 is a deficient number, since it is larger than the sum of its proper divisors (1356600386).

1550400424 is a wasteful number, since it uses less digits than its factorization.

1550400424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193800059 (or 193800055 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1550400424 is about 39375.1244315494. The cubic root of 1550400424 is about 1157.3941764251.

Adding to 1550400424 its reverse (4240040551), we get a palindrome (5790440975).

The spelling of 1550400424 in words is "one billion, five hundred fifty million, four hundred thousand, four hundred twenty-four".