615551041 has 4 divisors (see below), whose sum is σ = 703486912. Its totient is φ = 527615172.

The previous prime is 615551021. The next prime is 615551051. The reversal of 615551041 is 140155516.

It is a happy number.

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 not a de Polignac number, because 615551041 - 2⁵ = 615551009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (615551021) 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, 43967925 + ... + 43967938.

It is an arithmetic number, because the mean of its divisors is an integer number (175871728).

Almost surely, 2^615551041 is an apocalyptic number.

It is an amenable number.

615551041 is a deficient number, since it is larger than the sum of its proper divisors (87935871).

615551041 is an equidigital number, since it uses as much as digits as its factorization.

615551041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87935870.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 615551041 is about 24810.3011065968. The cubic root of 615551041 is about 850.6574111340.

The spelling of 615551041 in words is "six hundred fifteen million, five hundred fifty-one thousand, forty-one".