70572557 has 4 divisors (see below), whose sum is σ = 76988256. Its totient is φ = 64156860.

The previous prime is 70572553. The next prime is 70572563. The reversal of 70572557 is 75527507.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75527507 = 11 ⋅6866137.

It is a cyclic number.

It is not a de Polignac number, because 70572557 - 2² = 70572553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70572557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70572553) 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, 3207833 + ... + 3207854.

It is an arithmetic number, because the mean of its divisors is an integer number (19247064).

Almost surely, 2^70572557 is an apocalyptic number.

It is an amenable number.

70572557 is a deficient number, since it is larger than the sum of its proper divisors (6415699).

70572557 is a wasteful number, since it uses less digits than its factorization.

70572557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6415698.

The product of its (nonzero) digits is 85750, while the sum is 38.

The square root of 70572557 is about 8400.7474072251. The cubic root of 70572557 is about 413.2491329672.

The spelling of 70572557 in words is "seventy million, five hundred seventy-two thousand, five hundred fifty-seven".