615641052 has 48 divisors (see below), whose sum is σ = 1552390560. Its totient is φ = 188767488.

The previous prime is 615641051. The next prime is 615641083. The reversal of 615641052 is 250146516.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38974 + ... + 52442.

It is an arithmetic number, because the mean of its divisors is an integer number (32341470).

Almost surely, 2^615641052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 615641052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776195280).

615641052 is an abundant number, since it is smaller than the sum of its proper divisors (936749508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

615641052 is a wasteful number, since it uses less digits than its factorization.

615641052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13782 (or 13780 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 615641052 is about 24812.1150247213. The cubic root of 615641052 is about 850.6988725170.

Adding to 615641052 its reverse (250146516), we get a palindrome (865787568).

The spelling of 615641052 in words is "six hundred fifteen million, six hundred forty-one thousand, fifty-two".