1550225057 has 4 divisors (see below), whose sum is σ = 1550370816. Its totient is φ = 1550079300.

The previous prime is 1550225011. The next prime is 1550225069. The reversal of 1550225057 is 7505220551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1550225057 - 2¹² = 1550220961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1550225357) 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, 55553 + ... + 78654.

It is an arithmetic number, because the mean of its divisors is an integer number (387592704).

Almost surely, 2^1550225057 is an apocalyptic number.

It is an amenable number.

1550225057 is a deficient number, since it is larger than the sum of its proper divisors (145759).

1550225057 is a wasteful number, since it uses less digits than its factorization.

1550225057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145758.

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 1550225057 is about 39372.8974930726. The cubic root of 1550225057 is about 1157.3505368607.

The spelling of 1550225057 in words is "one billion, five hundred fifty million, two hundred twenty-five thousand, fifty-seven".