2545321477 has 4 divisors (see below), whose sum is σ = 2570033440. Its totient is φ = 2520609516.

The previous prime is 2545321469. The next prime is 2545321553. The reversal of 2545321477 is 7741235452.

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 2545321477 - 2³ = 2545321469 is a prime.

It is a super-2 number, since 2×2545321477² = 12957322842554923058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2545321417) 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, 12355827 + ... + 12356032.

It is an arithmetic number, because the mean of its divisors is an integer number (642508360).

Almost surely, 2^2545321477 is an apocalyptic number.

It is an amenable number.

2545321477 is a deficient number, since it is larger than the sum of its proper divisors (24711963).

2545321477 is a wasteful number, since it uses less digits than its factorization.

2545321477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24711962.

The product of its digits is 235200, while the sum is 40.

The square root of 2545321477 is about 50451.1791438020. The cubic root of 2545321477 is about 1365.3611690820.

The spelling of 2545321477 in words is "two billion, five hundred forty-five million, three hundred twenty-one thousand, four hundred seventy-seven".