61523130 has 16 divisors (see below), whose sum is σ = 147655584. Its totient is φ = 16406160.

The previous prime is 61523117. The next prime is 61523149. The reversal of 61523130 is 3132516.

It is a junction number, because it is equal to n+sod(n) for n = 61523097 and 61523106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1025356 + ... + 1025415.

It is an arithmetic number, because the mean of its divisors is an integer number (9228474).

Almost surely, 2^61523130 is an apocalyptic number.

61523130 is an abundant number, since it is smaller than the sum of its proper divisors (86132454).

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

61523130 is a wasteful number, since it uses less digits than its factorization.

61523130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050781.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 61523130 is about 7843.6681469833. The cubic root of 61523130 is about 394.7718171490.

Adding to 61523130 its reverse (3132516), we get a palindrome (64655646).

The spelling of 61523130 in words is "sixty-one million, five hundred twenty-three thousand, one hundred thirty".