1050148621 has 4 divisors (see below), whose sum is σ = 1075762044. Its totient is φ = 1024535200.

The previous prime is 1050148607. The next prime is 1050148637. The reversal of 1050148621 is 1268410501.

1050148621 = 22914² + 22915².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1268410501 = 23473 ⋅54037.

It can be written as a sum of positive squares in 2 ways, for example, as 525051396 + 525097225 = 22914^2 + 22915^2 .

It is a cyclic number.

It is not a de Polignac number, because 1050148621 - 2¹⁹ = 1049624333 is a prime.

It is a super-2 number, since 2×1050148621² = 2205624252376403282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1050148621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1050148921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12806650 + ... + 12806731.

It is an arithmetic number, because the mean of its divisors is an integer number (268940511).

Almost surely, 2^1050148621 is an apocalyptic number.

1050148621 is the 22915-th centered square number.

It is an amenable number.

1050148621 is a deficient number, since it is larger than the sum of its proper divisors (25613423).

1050148621 is an equidigital number, since it uses as much as digits as its factorization.

1050148621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25613422.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 1050148621 is about 32405.9966827129. The cubic root of 1050148621 is about 1016.4443094232. Note that the first 3 decimals are identical.

The spelling of 1050148621 in words is "one billion, fifty million, one hundred forty-eight thousand, six hundred twenty-one".