1550490101 has 2 divisors, whose sum is σ = 1550490102. Its totient is φ = 1550490100.

The previous prime is 1550490077. The next prime is 1550490107. The reversal of 1550490101 is 1010940551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 907816900 + 642673201 = 30130^2 + 25351^2 .

It is a cyclic number.

It is not a de Polignac number, because 1550490101 - 2²² = 1546295797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1550490107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775245050 + 775245051.

It is an arithmetic number, because the mean of its divisors is an integer number (775245051).

Almost surely, 2^1550490101 is an apocalyptic number.

It is an amenable number.

1550490101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1550490101 is an equidigital number, since it uses as much as digits as its factorization.

1550490101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 1550490101 is about 39376.2631670401. The cubic root of 1550490101 is about 1157.4164910123.

The spelling of 1550490101 in words is "one billion, five hundred fifty million, four hundred ninety thousand, one hundred one".