61421460 has 48 divisors (see below), whose sum is σ = 172368000. Its totient is φ = 16342144.

The previous prime is 61421453. The next prime is 61421573. The reversal of 61421460 is 6412416.

It is a self number, because there is not a number n which added to its sum of digits gives 61421460.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35086 + ... + 36794.

It is an arithmetic number, because the mean of its divisors is an integer number (3591000).

Almost surely, 2^61421460 is an apocalyptic number.

61421460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61421460 is an abundant number, since it is smaller than the sum of its proper divisors (110946540).

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

61421460 is a wasteful number, since it uses less digits than its factorization.

61421460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320 (or 2318 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 61421460 is about 7837.1844434082. The cubic root of 61421460 is about 394.5542372993.

Adding to 61421460 its reverse (6412416), we get a palindrome (67833876).

The spelling of 61421460 in words is "sixty-one million, four hundred twenty-one thousand, four hundred sixty".