61528403 has 4 divisors (see below), whose sum is σ = 64766760. Its totient is φ = 58290048.

The previous prime is 61528393. The next prime is 61528409. The reversal of 61528403 is 30482516.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61528403 - 2⁶ = 61528339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61528409) 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, 1619150 + ... + 1619187.

It is an arithmetic number, because the mean of its divisors is an integer number (16191690).

Almost surely, 2^61528403 is an apocalyptic number.

61528403 is a deficient number, since it is larger than the sum of its proper divisors (3238357).

61528403 is a wasteful number, since it uses less digits than its factorization.

61528403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3238356.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 61528403 is about 7844.0042707791. The cubic root of 61528403 is about 394.7830951421.

The spelling of 61528403 in words is "sixty-one million, five hundred twenty-eight thousand, four hundred three".