615641053 has 4 divisors (see below), whose sum is σ = 615995200. Its totient is φ = 615286908.

The previous prime is 615641051. The next prime is 615641083. The reversal of 615641053 is 350146516.

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 615641053 - 2¹ = 615641051 is a prime.

It is a super-2 number, since 2×615641053² = 758027812277897618, 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 (615641051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174453 + ... + 177946.

It is an arithmetic number, because the mean of its divisors is an integer number (153998800).

Almost surely, 2^615641053 is an apocalyptic number.

It is an amenable number.

615641053 is a deficient number, since it is larger than the sum of its proper divisors (354147).

615641053 is a wasteful number, since it uses less digits than its factorization.

615641053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354146.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 615641053 is about 24812.1150448727. The cubic root of 615641053 is about 850.6988729776.

Adding to 615641053 its reverse (350146516), we get a palindrome (965787569).

The spelling of 615641053 in words is "six hundred fifteen million, six hundred forty-one thousand, fifty-three".