157620002 has 4 divisors (see below), whose sum is σ = 236430006. Its totient is φ = 78810000.

The previous prime is 157619981. The next prime is 157620019. The reversal of 157620002 is 200026751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200026751 = 3527 ⋅56713.

It can be written as a sum of positive squares in only one way, i.e., 156775441 + 844561 = 12521^2 + 919^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 157620002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39404999 + ... + 39405002.

Almost surely, 2^157620002 is an apocalyptic number.

157620002 is a deficient number, since it is larger than the sum of its proper divisors (78810004).

157620002 is an equidigital number, since it uses as much as digits as its factorization.

157620002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78810003.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 157620002 is about 12554.6804817964. The cubic root of 157620002 is about 540.1782699022.

Adding to 157620002 its reverse (200026751), we get a palindrome (357646753).

The spelling of 157620002 in words is "one hundred fifty-seven million, six hundred twenty thousand, two".