615350401 has 4 divisors (see below), whose sum is σ = 615764052. Its totient is φ = 614936752.

The previous prime is 615350399. The next prime is 615350413. The reversal of 615350401 is 104053516.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 546858225 + 68492176 = 23385^2 + 8276^2 .

It is a cyclic number.

It is not a de Polignac number, because 615350401 - 2¹ = 615350399 is a prime.

It is a super-2 number, since 2×615350401² = 757312232021721602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (615359401) 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, 204586 + ... + 207571.

It is an arithmetic number, because the mean of its divisors is an integer number (153941013).

Almost surely, 2^615350401 is an apocalyptic number.

It is an amenable number.

615350401 is a deficient number, since it is larger than the sum of its proper divisors (413651).

615350401 is a wasteful number, since it uses less digits than its factorization.

615350401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413650.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 615350401 is about 24806.2572952874. The cubic root of 615350401 is about 850.5649766382.

The spelling of 615350401 in words is "six hundred fifteen million, three hundred fifty thousand, four hundred one".