55702242 has 40 divisors (see below), whose sum is σ = 128201436. Its totient is φ = 18063648.

The previous prime is 55702237. The next prime is 55702247. The reversal of 55702242 is 24220755.

It is an interprime number because it is at equal distance from previous prime (55702237) and next prime (55702247).

It can be written as a sum of positive squares in 2 ways, for example, as 55666521 + 35721 = 7461^2 + 189^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (55702247) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1348 + ... + 10640.

Almost surely, 2^55702242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55702242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64100718).

55702242 is an abundant number, since it is smaller than the sum of its proper divisors (72499194).

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

55702242 is a wasteful number, since it uses less digits than its factorization.

55702242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9344 (or 9335 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 55702242 is about 7463.3934641020. The cubic root of 55702242 is about 381.9069471729.

Adding to 55702242 its reverse (24220755), we get a palindrome (79922997).

The spelling of 55702242 in words is "fifty-five million, seven hundred two thousand, two hundred forty-two".