61502000 has 160 divisors (see below), whose sum is σ = 178274304. Its totient is φ = 20064000.

The previous prime is 61501963. The next prime is 61502003. The reversal of 61502000 is 20516.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (61502003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 321905 + ... + 322095.

Almost surely, 2^61502000 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 61502000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89137152).

61502000 is an abundant number, since it is smaller than the sum of its proper divisors (116772304).

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

61502000 is a wasteful number, since it uses less digits than its factorization.

61502000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 61502000 is about 7842.3210849850. The cubic root of 61502000 is about 394.7266174350.

Adding to 61502000 its reverse (20516), we get a palindrome (61522516).

The spelling of 61502000 in words is "sixty-one million, five hundred two thousand".