1550480657 has 4 divisors (see below), whose sum is σ = 1691433456. Its totient is φ = 1409527860.

The previous prime is 1550480639. The next prime is 1550480663. The reversal of 1550480657 is 7560840551.

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 1550480657 - 2⁸ = 1550480401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1550480677) 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, 70476383 + ... + 70476404.

It is an arithmetic number, because the mean of its divisors is an integer number (422858364).

Almost surely, 2^1550480657 is an apocalyptic number.

It is an amenable number.

1550480657 is a deficient number, since it is larger than the sum of its proper divisors (140952799).

1550480657 is a wasteful number, since it uses less digits than its factorization.

1550480657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140952798.

The product of its (nonzero) digits is 168000, while the sum is 41.

The square root of 1550480657 is about 39376.1432468951. The cubic root of 1550480657 is about 1157.4141410751.

The spelling of 1550480657 in words is "one billion, five hundred fifty million, four hundred eighty thousand, six hundred fifty-seven".