61523000 has 256 divisors, whose sum is σ = 194088960. Its totient is φ = 17664000.

The previous prime is 61522997. The next prime is 61523009. The reversal of 61523000 is 32516.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 61523000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61523009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1308977 + ... + 1309023.

It is an arithmetic number, because the mean of its divisors is an integer number (758160).

Almost surely, 2^61523000 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 61523000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97044480).

61523000 is an abundant number, since it is smaller than the sum of its proper divisors (132565960).

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

61523000 is a wasteful number, since it uses less digits than its factorization.

61523000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 61523000 is about 7843.6598600398. The cubic root of 61523000 is about 394.7715390943.

Adding to 61523000 its reverse (32516), we get a palindrome (61555516).

The spelling of 61523000 in words is "sixty-one million, five hundred twenty-three thousand".