745475550 has 24 divisors (see below), whose sum is σ = 1848779736. Its totient is φ = 198793440.

The previous prime is 745475503. The next prime is 745475557. The reversal of 745475550 is 55574547.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745475557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2484769 + ... + 2485068.

It is an arithmetic number, because the mean of its divisors is an integer number (77032489).

Almost surely, 2^745475550 is an apocalyptic number.

745475550 is an abundant number, since it is smaller than the sum of its proper divisors (1103304186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

745475550 is a wasteful number, since it uses less digits than its factorization.

745475550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4969852 (or 4969847 counting only the distinct ones).

The product of its (nonzero) digits is 490000, while the sum is 42.

The square root of 745475550 is about 27303.3981401583. The cubic root of 745475550 is about 906.7296165984.

The spelling of 745475550 in words is "seven hundred forty-five million, four hundred seventy-five thousand, five hundred fifty".