1550440153 has 2 divisors, whose sum is σ = 1550440154. Its totient is φ = 1550440152.

The previous prime is 1550440127. The next prime is 1550440159. The reversal of 1550440153 is 3510440551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1097729424 + 452710729 = 33132^2 + 21277^2 .

It is a cyclic number.

It is not a de Polignac number, because 1550440153 - 2¹⁷ = 1550309081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1550440159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775220076 + 775220077.

It is an arithmetic number, because the mean of its divisors is an integer number (775220077).

Almost surely, 2^1550440153 is an apocalyptic number.

It is an amenable number.

1550440153 is a deficient number, since it is larger than the sum of its proper divisors (1).

1550440153 is an equidigital number, since it uses as much as digits as its factorization.

1550440153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1550440153 is about 39375.6289219614. The cubic root of 1550440153 is about 1157.4040624132.

The spelling of 1550440153 in words is "one billion, five hundred fifty million, four hundred forty thousand, one hundred fifty-three".