1550020253 has 2 divisors, whose sum is σ = 1550020254. Its totient is φ = 1550020252.

The previous prime is 1550020123. The next prime is 1550020259. The reversal of 1550020253 is 3520200551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1507535929 + 42484324 = 38827^2 + 6518^2 .

It is a cyclic number.

It is not a de Polignac number, because 1550020253 - 2¹⁶ = 1549954717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1550020259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775010126 + 775010127.

It is an arithmetic number, because the mean of its divisors is an integer number (775010127).

Almost surely, 2^1550020253 is an apocalyptic number.

It is an amenable number.

1550020253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1550020253 is an equidigital number, since it uses as much as digits as its factorization.

1550020253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 1550020253 is about 39370.2965825761. The cubic root of 1550020253 is about 1157.2995678186.

It can be divided in two parts, 15500 and 20253, that added together give a palindrome (35753).

The spelling of 1550020253 in words is "one billion, five hundred fifty million, twenty thousand, two hundred fifty-three".