1355481677 has 4 divisors (see below), whose sum is σ = 1478707296. Its totient is φ = 1232256060.

The previous prime is 1355481629. The next prime is 1355481683. The reversal of 1355481677 is 7761845531.

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 1355481677 - 2¹² = 1355477581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355481877) 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, 61612793 + ... + 61612814.

It is an arithmetic number, because the mean of its divisors is an integer number (369676824).

Almost surely, 2^1355481677 is an apocalyptic number.

It is an amenable number.

1355481677 is a deficient number, since it is larger than the sum of its proper divisors (123225619).

1355481677 is a wasteful number, since it uses less digits than its factorization.

1355481677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123225618.

The product of its digits is 705600, while the sum is 47.

The square root of 1355481677 is about 36816.8667460989. The cubic root of 1355481677 is about 1106.7033309795.

The spelling of 1355481677 in words is "one billion, three hundred fifty-five million, four hundred eighty-one thousand, six hundred seventy-seven".