1390275055 has 16 divisors (see below), whose sum is σ = 1797685344. Its totient is φ = 1026080640.

The previous prime is 1390275023. The next prime is 1390275059. The reversal of 1390275055 is 5505720931.

It is a happy number.

It is not a de Polignac number, because 1390275055 - 2⁵ = 1390275023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390275059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133497 + ... + 143533.

It is an arithmetic number, because the mean of its divisors is an integer number (112355334).

Almost surely, 2^1390275055 is an apocalyptic number.

1390275055 is a deficient number, since it is larger than the sum of its proper divisors (407410289).

1390275055 is a wasteful number, since it uses less digits than its factorization.

1390275055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12186.

The product of its (nonzero) digits is 47250, while the sum is 37.

The square root of 1390275055 is about 37286.3923569980. The cubic root of 1390275055 is about 1116.0926381628.

Adding to 1390275055 its reverse (5505720931), we get a palindrome (6895995986).

The spelling of 1390275055 in words is "one billion, three hundred ninety million, two hundred seventy-five thousand, fifty-five".