61562040 has 32 divisors (see below), whose sum is σ = 184686480. Its totient is φ = 16416512.

The previous prime is 61562029. The next prime is 61562047. The reversal of 61562040 is 4026516.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 61562040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61562047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256389 + ... + 256628.

Almost surely, 2^61562040 is an apocalyptic number.

61562040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61562040 is an abundant number, since it is smaller than the sum of its proper divisors (123124440).

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

61562040 is a wasteful number, since it uses less digits than its factorization.

61562040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513031 (or 513027 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 61562040 is about 7846.1480995454. The cubic root of 61562040 is about 394.8550234396.

Adding to 61562040 its reverse (4026516), we get a palindrome (65588556).

The spelling of 61562040 in words is "sixty-one million, five hundred sixty-two thousand, forty".