75571420 has 12 divisors (see below), whose sum is σ = 158700024. Its totient is φ = 30228560.

The previous prime is 75571403. The next prime is 75571429. The reversal of 75571420 is 2417557.

It is a super-2 number, since 2×75571420² = 11422079041632800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75571429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1889266 + ... + 1889305.

It is an arithmetic number, because the mean of its divisors is an integer number (13225002).

Almost surely, 2^75571420 is an apocalyptic number.

It is an amenable number.

75571420 is an abundant number, since it is smaller than the sum of its proper divisors (83128604).

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

75571420 is a wasteful number, since it uses less digits than its factorization.

75571420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778580 (or 3778578 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 75571420 is about 8693.1823862151. The cubic root of 75571420 is about 422.7846336636.

Adding to 75571420 its reverse (2417557), we get a palindrome (77988977).

The spelling of 75571420 in words is "seventy-five million, five hundred seventy-one thousand, four hundred twenty".